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	Nombre d'or		2003-10-31
		Claude pose la question : Comment démontrer que si a/b est égal au nombre d'or alors a+b/a est égal aussi au nombre d'or Comment faut t il choisir a et b pour que le puzzle de lewis caroll soit réalisable? on sait déjà que les nombres 8 et 5 ainsi que 6 et 3 ne sont pas valables. Claude Tardif lui répond.
	le nombre d'or		2000-06-14
		Belhaj Saad pose la question : quel est le nombre d'or? Claude Tardif lui répond.
	The average height of a wall		2019-08-15
		Jeff pose la question : Trying to figure the average height of a sloped foundation wall. The lowest point is 24 inches or 2 feet. The highest point is 116 inches or 9’ 8 inches. Can this be figured without the degree of slope or can we assume it is Equaled sloped from point a to point b. Thanks Penny Nom lui répond.
	Why Mean?		2019-05-08
		Jill pose la question : A group of teachers were trying to figure out why the”mean” is called mean - do you know?? Penny Nom lui répond.
	How many students passed the test?		2018-07-20
		florian pose la question : In Mr. Edgecomb's math class, 30 students took an exam on statistics. If the average passing grade was 84, the average failing grade was 60, and the overall average was 80, how many students passed the test? Penny Nom lui répond.
	The mean and median		2018-03-24
		Myrte pose la question : Is the median always smaller then the mean? Penny Nom lui répond.
	60% as much as $30.		2014-07-18
		Kenneth pose la question : Question from Kenneth: Hello: Do you know why some "as...as" phrases indicate multiplication? For example, ? is 60% as much as $30. This is equivalent to 60% X $30 = $18. How does this make sense? I saw this example in an old textbook on business mathematics, but the author did not explain why it is equivalent to multiplication. I thank you for your reply. Robert Dawson lui répond.
	An error in finding the mean		2013-02-25
		Abhishek pose la question : Mean of 50 observations was found to be 80.4 but later all it was discovered 96 was mistake at 69 Find the correct mean? Penny Nom lui répond.
	What was the class average?		2012-04-20
		olwale pose la question : a class which consist of 15 boys and 10 girls sit for a test. the average score of the boys is 20 and the girls' is 25. find the average score of the class. Penny Nom lui répond.
	The same mean but different ranges		2012-01-14
		swathi pose la question : Frank and Frances work out at their local gym. the mean of their workout times is the same: 48 min. however, the range of Frank's workout times is 7 min, while the range of Frances'sworkout times is 16 min. explain how this is possible. Penny Nom lui répond.
	Mean and Average		2012-01-03
		john pose la question : what is the difference between average and mean Robert Dawson lui répond.
	The average age of 300 cars		2011-11-22
		Jason pose la question : I have 300 used cars built from 1970 to 1980, I would like to know the average age by total volume. If I provide the qty built per year, can I determine the average age of the lot (300) by total volume? Total built 50 56 30 10 30 25 64 9 12 14 Year built 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 Thanks Penny Nom lui répond.
	The median is greater than the mean		2009-08-14
		Shawna pose la question : If the median is greater than the mean on a set of test scores, describe the situation. Robert Dawson lui répond.
	Mean		2009-05-02
		debra pose la question : a hot dog sales per week monday, 100 = tuesday,87 = wednesday, 95 = thursday, 125 = friday, 210 = saturday, 250 = sunday, 57 = what is the mean sales per day? Penny Nom lui répond.
	Z-score		2009-03-25
		Barb pose la question : I am having trouble finding information on a z score and the conversion to the number of standard deviations a z value can be away from the mean. What exactly does that mean and what am I looking for? Help Please. Harley Weston lui répond.
	4 times as many or 4 times more?		2009-02-02
		Jackie pose la question : Given : Here are 3 squares and 4 sets of 3 circles. I wonder it is right to write in the below manner to represent the following Conclusion that can be made from the above given information: There are 4 times as many circles as there are squares, There are 4 times fewer square than circles; There are 4 times more circles than squares. ... Jackie Robert Dawson lui répond.
	Finding the Raw Score for a Mean of 0 and Standard Deviation of 1		2008-10-02
		Anita pose la question : A variable Y has a distribution of mean of Y =80 and standard deviation of Y=36. Find the values of A and B for transforming y*=A +BY so that mean of y* =0 and standard deviation of y*=1. Janice Cotcher lui répond.
	The average height of an attic		2008-09-12
		oliver pose la question : I need to find out the average height of a specific volume/area. a standard house shape side walls height 10m, height in centre of house 15m. width 15m length 25m (the roof spans the width) Within the house in the corner there is a (box shape) room which is 5m in height by 3m wide and 4 m long How do i work out the average height of the space directly above the room (same floor area)? Stephen La Rocque and Harley Weston lui répond.
	What will be the resulting average?		2008-09-05
		jean pose la question : the average of 9 is 54.if 84 and 90 are added to the set of numbers ,what will be the resulting average? Penny Nom lui répond.
	z-score		2008-07-02
		Candace pose la question : If a normal-shaped distribution has a mean of 80 and a standard deviation of 15 what is the z-score for M=84 for a sample of n=25 scores. Is this sample mean in the middle 95% of the distribution? Harley Weston lui répond.
	The distribution of sample means		2008-07-02
		crystal pose la question : A population forms a normal distribution with a mean of 75 and a standard deviation of 20. How do I sketch the distribution of sample means for samples of n= 100? Harley Weston lui répond.
	The mean, the median and the mode		2008-06-23
		Crystal pose la question : Hi my name is Crystal, My question is under what circumstances will the mean, the median, and the mode all have the same value? Stephen La Rocque and Harley Weston lui répond.
	The mean and variance		2008-06-05
		Donny pose la question : An investment will be worth $1,000, $2,000, or $5,000 at the end of the year. The probabilities of these values are .25, .60, and .15, respectively. Determine the mean and variance of the worth of the investment. Harley Weston lui répond.
	The average rate of change		2008-03-29
		Tom pose la question : For the function x/3x-1 find the average rate of change between the interval x=1 and x=5? Harley Weston lui répond.
	Expected value and standard deviation		2008-03-19
		Patrick pose la question : Heres a question i cant figure out: a small airline company has only three flights per day. The number of delayed flights per day is regarded as a random variable, and I'm supposed to calculate the expected value and standard deviation of the number of delays. the probability distribution looks like: No. of Delays: 0 1 2 3 Prob. of delay: 05. 0.3 .1 .1 Harley Weston lui répond.
	Average and mean		2008-03-17
		A student pose la question : Mean and average are the same propeties of the set of elements, if there is average then why mathematician need the mean ? Penny Nom lui répond.
	Stacks of blocks		2008-02-07
		Tammy pose la question : i need help for my son he is given 3 stacks of cubes. the 1rst stack has 3 the 2nd stack has 2 the 3rd stack has 4 the question is draw the stacks of cubes so they are arranged correctly to find the mean. what is the mean of the data? Stephen La Rocque and Penny Nom lui répond.
	Mean and standard deviation		2007-12-10
		Jamie pose la question : Let n be any odd whole number. a) Which has the greater mean: the odd whole numbers from 1 to n, or the even whole numbers from 2 to n-1? b) Which has the greater standard deviation: the odd whole numbers from 1 to n, or the even whole numbers from 2 to n-1? Penny Nom lui répond.
	How old is the 11th person?		2007-12-08
		Jamie pose la question : Ten people are in a room, and their mean age is 15. After another person enters the room, the mean age is now 18. How old is the person that walked in? Jesse McLeod and Stephen La Rocque lui répond.
	A decision based on data		2007-12-04
		manny pose la question : You have administered a standardized test of manual dexterity to two groups of 10 semi skilled workers. One of these two groups of workers will be employed by you to work in a warehouse with many fragile items. The higher the manual dexterity of a worker the less likelihood that worker will break significant inventory. Because of a unique contract you must hire all 10 employees from one of the two groups and none of the employees from the other. You must decide which group to choose. Choose at least two measures of central tendency and at least one measure of dispersion for each group and use those to make your choice. Be sure to justify your choice with at least one page of discussion and analysis. Penny Nom lui répond.
	Grouped data		2007-10-08
		Nimra pose la question : The following sets of data represent the distributions of house prices in the north-east and south-west of a country. Random samples of 100 houses were selected in each region. (a) Calculate the mean, median and standard deviation for Harley Weston lui répond.
	Finding a geometric mean and taking its antilog		2007-08-27
		Jack pose la question : Would like to know the basic geometric mean calculation. Also how would I take the antilog from this number? Stephen La Rocque lui répond.
	The change in an average		2007-08-19
		farah pose la question : the average height of a group of 25 students goes up by 2 cm when astudent of height 165 cm replaces a student from the group.what is the height of the boy who went out of the group? Stephen La Rocque lui répond.
	What was the average?		2007-08-08
		Leroy pose la question : A total of 50 juniors and seniors were given a math test. The 35 juniors attained an average score of 80 while the 15 seniors attained an average of 70. What was the average score for all 50 students who took the test? Penny Nom lui répond.
	A statistics example		2007-08-02
		Claudia pose la question : A particular employee arrives to work some time between 8:00 am - 8:30 am. Based on past experience the Company has determined that the employee is equally likely to arrive at any time between 8:00 am - 8:30 am. On average, what time does the employee arrive? What is the standard deviation of the time at which the employee arrives? Find the probability that the employee arrives exactly at 8:12 am? Find the probability that the employee arrives between 8:20 am - 8:25 am? Har lui répond.
	The "mode" of a set of numbers		2007-06-06
		Anthony's mom pose la question : we have a graph: Kindergarten has 1, 1st has 5, 2nd has 4, 3rd has 3 is the mode "1st grade" because there are more children in that grade? Stephen La Rocque lui répond.
	How to increase your average		2007-05-24
		Janna pose la question : after taking 4 quizes your average is 71 out of 100. what must your average on the next 5 quizes be to increase your average to an 81 out of 100? Penny Nom lui répond.
	Normal distribution		2007-05-24
		Paula pose la question : Consider a data set that is normally distributed. The mean of the data set is equal to 10,000. a.) Suppose that, for this data set, 10,625 has a "z-value" = 2.5. Solve for the standard deviation of the data set. b.) Solve for the "z-value" of 9,900. Penny Nom lui répond.
	Average		2007-05-06
		michelle pose la question : the average of x and y is 20. If z = 5, what is the average of x, y, and z. Stephen La Rocque lui répond.
	I have N data points in m-dimensional space		2007-04-29
		Sid pose la question : Hi, Given below is the problem that I am facing: I have N data points in m-dimensional space. I know the mean euclidean distance of the points from one given point (say the origin). Now I wish to find the mean Euclidean distance of the N points from another given point. How can i do this without knowing the values of the N points and only knowing the 2 origin points and the mean distance from one of the origin points ? Penny Nom lui répond.
	Can you have median < mode < mean?		2007-04-11
		Kaliela pose la question : Can the Median > mode > mean? Can the Mean > Mode > Median? I don't think either of these can occur but I'm unsure why? Penny Nom lui répond.
	Arithmetic means and geometric means		2007-04-04
		Dani pose la question : Hi! I was just wondering why the arithmetic mean of sets of numbers is larger than the mean proportional of the same numbers? Thanks! Dani Haley Ess lui répond.
	A missing observation		2007-04-02
		destinee pose la question : please help me my problem is 5,11,19,3,15,17,5,n find n given the following info.range:16 mode:5 median:8 mean:10 what the heck is the answer Penny Nom lui répond.
	The name of an equation		2006-11-13
		Lee pose la question : I am struggling to find the name of the following equation. I remember watching a TV programme introduced by Arthur C Clarke. The programme focused on an equation that gave a wonderful pattern that went on into infinity. Two maths professors discussed this equation.It was described as 'Gods equation' as it was compared to the shape of trees and other shapes in nature. It was named after the inventor/discoverer. If you have any ideas i would be most grateful. Penny Nom lui répond.
	The median		2006-09-26
		Sam pose la question : How do you find the median in a group of numbers? Stephen La Rocque and Penny Nom lui répond.
	Absolute Value vs. Standard Deviation ?		2006-04-24
		Sonia pose la question : Why we don't just take the average of the absolute value of difference scores (use the mean deviation) to describe variability instead of calculating the standard deviation? Claude Tardif lui répond.
	Divide the product of three consecutive positive integers by their mean		2006-03-12
		Sandy pose la question : When I divided the product of three consecutive positive integers by their mean, I got 99. What is the smallest of the three numbers? Stephen La Rocque lui répond.
	The meaning of numbers		2006-03-03
		John pose la question : I'm having a philosophical debate on the meaning of numbers, equations, or the world of math in general. Would it be possible if you could help me by giving me a resource that talks about it or if you have your own opinion I would be most grateful. Harley weston lui répond.
	Mean and average		2005-12-22
		Jerry pose la question : This is just a question from a degreed engineer that has a "understanding" problem. please go to http://www.metrika.com/3medical/hemoglobin-m.html At the end of the page they talk about "mean" vrs "average" there does appear to be a difference. What is it? Harley Weston lui répond.
	The Mean Value Theorem		2005-12-22
		Candace pose la question : Verify that the function satisfies the hypotheses of the Mean Value Theorem on the given interval. Find all numbers "c" that satisfy the Mean Value Theorem. 11. f(x)=3x2 + 2x +5 [-1, 1] Penny Nom lui répond.
	Means of sample means		2005-10-12
		Fareeha pose la question : A population consists of six numbers 1,2,3,4,5,6 a) How many different samples of two numbers can be selected with replacement? and list them. b) Calculate the mean and standard deviation of the population b2) Calculate the mean and standard deviation of the mean of the samples. c) Find the standard error of your estimated mean in question b2 and compare with the estimated standard deviation in b2. Penny Nom lui répond.
	The golden ratio		2004-12-31
		Cristina pose la question : let x represent the longer segment. to find the golden ratio, write a proportion such that the longer of the two segments is the geometric mean between the shorter segment and the entire segment.Use the quadratic Formula to solve the proportion for X. Find the value in both radical and decimal form. Penny Nom lui répond.
	AB/AP=AP/PB		2003-11-20
		James pose la question : My name is James McBride. I'm having a difficult time with a pre calculus problem, which goes as follows: "show that AB/AP=AP/PB is equal to (1+5^1/2)/2 (one plus the sqaure root of five with the sum divided by two. I can't do the square root sign, sorry.) I have tried to solve for PB in terms of the other varialbles and then work the quadratic equation. THAT DOES NOT WORK!!!! I am befuddled. Please help me. I am a student of secondary level. Penny Nom lui répond.
	X bar		2003-11-04
		mary pose la question : Remind me what this means: _ X Andrei Volodin lui répond.
	Means		2003-10-28
		Abdu pose la question : Question: 80,80,84,85,88,92,97,98 The average of the 8 numbers listed above is 88. Of the following which pair of numbers could be removed from the list without changing the average. A. 80 and 97 B. 80 and 98 C. 84 and 92 D. 84 and 97 E. 85 and 92 Andrei Volodin and Penny Nom lui répond.
	Statistics from grouped data		2003-10-09
		Rebecca pose la question : I have to use a suitable computer package (ie. Excel) to work out the mean and standard deviation of the following: Price Range No of Houses No of Houses £`000 Area 1 Area 2 45 and under 50 4 5 50 and under 55 7 12 55 and under 60 14 16 60 and under 70 19 18 70 and under 80 8 3 80 and under 100 5 2 I have used excel to work out mean and standard deviation before, but not in a more complicated example like this. Any advice on where to start would be greatly appreciated. Penny Nom lui répond.
	The golden ratio		2003-09-23
		Phillip pose la question : The Golden Section can be made from an equilatereral triangle inscribed within a circle. The Golden Section is achieved by joining the mid points of two arms of the triangle to the circumference. I can prove this by erecting a perpendicular to the line outside the circle, but am interested to see how it can be proved from within the circle. Chris Fisher lui répond.
	The mean house price		2003-09-10
		Carol pose la question : Question: I have to find the mean from the following example: Price Range £000 No of Houses 55 and under 60 3 60 and under 65 6 65 and under 70 13 70 and under 80 21 80 and under 100 15 100 and under 130 7 130 upwards 1 I know when calculating the mean you use the mid points of the classes, but how does this work for the 130 upwards class? Also, does this still work given the difference in the classes (ie. 1st class is 5, 5th class is 20, etc). Any help to get me started would be greatly appreciated. Penny Nom lui répond.
	E(X + Y) and V(X + Y)		2003-07-10
		Reuben pose la question : I'm a teacher trying to find a way to make some stats work from first principles. The topic is expectation algebra and it is for the top age level in high school. By using a set of data I can show how the mean is the same as the expected value ie 2,2,3,4,4 is 15 / 5 = 3 also, 2x0.4+3x0.2+4x0.4=3. I can also show this to work for the variance in the same style but using Sum(x-mean)2/n and the Var(X) version of squaring x then multiplying by the probability ( all this for random independant samples). Now comes the tricky bit.....when I try to show E(X+Y) = E(X) + E(Y) from setting up two data sets I get it to work only if I add each item from X to each item from Y. However, I can't get it to work for V(X+Y)=V(X) + V(Y) from two sets of data. There must be something missing in my knowledge of how the sets are required to add together or my knowledge of expectation algebra. I am familiar with proofs but still want to show my students that the basic formulae work from groups of data whether done the long way or by use of formulae. Can you help please? Penny Nom lui répond.
	Mean and median		2003-01-04
		Jan pose la question : I have a question re: mean and median. I know what the difference is but just need some clarification on when you would use the mean and when you would use the median. Isn't it the case that with a skewed distribution the average (mean) would be higher or lower than the median, but with a normal distribution they would be very similar values? If you have any examples to help explain this that would be greatly appreciated. I am a teacher (of sorts!) and the person who is asking me the question is actually my boss! Penny Nom lui répond.
	Mean, median and mode		2002-09-08
		Ramona pose la question : How do you calculate the mean, median, and mode? what are each of their definitions? Leeanne Boehm lui répond.
	The mean distance travelled		2002-06-07
		A student pose la question : If Rosalia travels 1000 km Sheree travels 280 km Daniel travels 50 km Mica travels 200 km Connor travels 500 km Eric travels 250 km Hillary travels 300 km What was the mean distance travelled? How do you arrive at the answer? Penny Nom lui répond.
	The average of two averages		2002-05-22
		RJ pose la question : in a class with 22 students, the average garde on an exam was 68%, in another class with 32 students, the average grade on the same exam was 78%, what was the overall for the two classes? round your answers to the nearest whole number. Leeanne Boehm lui répond.
	The Dugout, Don's Basement, Cd Corner,...		2002-04-30
		A student pose la question : The Dugout, Don's Basement, Cd Corner, Harry's Deli, Bill's Software, Anne's Footwear, and Joanne's House cleaning. The gift certificates are each in multiples of $5. There is a $100 range in the value of the gift certificates, which start at $25. The mean value of all seven gift certificates is $80, and the median and mode are both $70. The certificate from The Dugout is worth the most and the one from Joanne House cleaning is worth the least. The total value of the gift certificates from CD Corner, Harry's Deli, and Anne's Footwear is $270, but Anne's Footwear certificate is worth $50 more than the one from Harry's Deli. The Cd Corner gift certificate is equivalent to the mean for this group of three. What is the value of the gift certificates from each store? Penny Nom lui répond.
	Number conversions and averages		2002-02-03
		A student pose la question : A table has the measurements of 1.6m by 2m, how much material is needed to cover table? I converted to cm then multiplied but got an answer of 32000cm ,so I divide by 100 to get to metres - the answer was 320 which I know is wrong - please explain!! Also I need to explain in my own words what an 'average' is and I am struggling. Penny Nom lui répond.
	Mathematical & conventional meaning of a word		2001-10-12
		A student pose la question : What is the mathematical & conventional meaning of a word? Like the word Rational or Median. Penny Nom lui répond.
	Ciefficient of variation		2001-09-23
		Carmen pose la question : I have a question from my OAC finite class. I've come across a problem with the coefficient of variation. I have taught my students that there are no units for coefficient of variation and it can be expressed as a percent. So, for example, a set of data with mean of 5 and standard deviation of 100 would have a CV of 5%. But what happens in this situation: the mean is 4meters and the standard deviation is 0.7mm. Is the CV 1.75% or 0.00175% or 0.0175%? I've had some students change leave the units as is, change them both to mm or change them both to meters...so which is it and why? Penny Nom lui répond.
	The Mean Value Theorem		2001-07-23
		Corrie pose la question : I need to find if the mean value theorem exists. and if so, find all values c guaranteed by the theorem. f(x) = |x2-25| on the interval [-10,0] Harley Weston lui répond.
	Comparing means and standard deviations		2001-07-11
		Shelly pose la question : Is there a way to compare means and standard deviations that come from different size samples? Is there an equation that can normalize sample size? Andrei Volodin lui répond.
	The average value of a continuous function		2001-05-08
		Esther pose la question : The average value of a continuous function y = f(x) on the interval [a,b] is given by ________________? Harley Weston lui répond.
	Lots of coins		2001-04-26
		A student pose la question : I purchase 2 million coins at 9.75 I purchase 1 milion coins at 8 what is the formula to calculate my average cost? Penny Nom lui répond.
	A few problems		2001-04-22
		Carol pose la question : Hello I am a College student trying get through my elmentry concepts class. I am also working with the middle and elementry school student with their work. I was given a few problems to work on and i am having a hard time explaining them to students. DO you think you can help with a coupld of these questions! Penny Nom lui répond.
	8, 4, 2, 18, 1, 9		2001-01-11
		Neyra pose la question : Place each number below in one of the blanks to create the most meaningful and realistic story possible. Claude Tardif lui répond.
	What is the difference between Mean and Average?		2000-12-13
		Julie pose la question : What is the difference between Mean and Average? My thinking is the average, is the equal to the sum of all numbers divided by the number of numbers added together. But the mean, I think should be calculated by adding the largest and smallest numbers in the set and them dividing by 2. (which is the point where 1/2 the numbers are higher and 1/2 the numbers are lower) Patrick Maidorn and Penny Nom lui répond.
	Two more problems		2000-12-01
		Michael pose la question : first question: The mean of three test grades is 74. What must a fourth grade be to increase the mean to 78? final question: The product of two consecutive odd positive integers added to their sum is 119. What are these two integers? Claude Tardif lui répond.
	Expected number		2000-11-02
		James pose la question : 1)There are 40,25,50 students in the traditional,reformed,and reformed traditional Calculas sections taught by three teachers. On one fine day the three sections congregate together to watch the NOVA video tape on Fermat's Last Theorem. a) A student is randomly selected from he crowed of students.What is the expected number of students in the same section of this student? ****this question which i did not have any idea to do as follow for the part b b) If one of the three teachers is selected at random, what is the expected number of students taught by is teacher? Harley Weston lui répond.
	Mr. Edgecomb's math exam		2000-09-17
		Rachel pose la question : In Mr. Edgecomb's math class, 30 students took an exam on statistics. If the average passing grade was 84, the average failing grade was 60, and the overall average was 80, how many students passed the test? Penny Nom lui répond.
	Central Limit Theorem and Law of Large Numbers		2000-06-26
		Jonathan Yam pose la question : The Central limit Theorem states that when sample size tends to infinity, the sample mean will be normally distributed. The Law of Large Number states that when sample size tends to infinity, the sample mean equals to population mean. Is the two statements contradictory? Paul Betts and Harley Weston lui répond.
	Sample variance		2000-04-16
		Jonathan Freeman pose la question : I was just reading your article entitled "A Note on Standard Deviation" I'm now teaching a unit on s.d. and my students were wondering why one uses a denominator of n for a population and n-1 for a sample. I saw in your article that this is because "[the quantity] tends to underestimate sigma... and other technical reasons." To which my students again asked... "Why?" Could you please elaborate a bit on the "other technical reasons" perhaps in terms a high school senior (or their teacher...) could understand? Harley Weston lui répond.
	Algebra		2000-01-18
		Candis pose la question : I want to know what exactly is Algebra? Not how to do it, or methods. Just what is it? Allen Herman lui répond.
	Absolute value		1999-12-29
		Alex Waller pose la question : What are some practical applications for absolute value? Harley Weston lui répond.
	Fibonacci Numbers		1999-12-15
		Gary Nelb pose la question : I'm doing a project on fibonacci numbers and I'm using different starting values and finding out if different starting values to see whether or not the ratios still get closer to phi. I was wondering, what numbers should I use. Should I use two of the same # like 2 and 2, or numbers like 1 and 2, or even something totally different. Denis Hanson lui répond.
	Advanced Calculus		1999-12-07
		Kay pose la question : Hi, my name is Kay. Please help---these problems are driving me crazzzzy!!!! Your help would be greatly appreciated! Let a,b be contained in R, a . . . Claude Tardif lui répond.
	Mean, median and mode		1999-12-07
		J William Morning pose la question : Using the data values 2,2,10,6,5, determine the median, mode and mean. Penny Nom lui répond.
	The sixth game		1999-11-16
		Stephanie Sprunger pose la question : Janice scored 18,21,27,16,and 19 points in five basketball games. How many points must she score in the next game to raise her average to 22 points per game? Penny Nom lui répond.
	Estimating the population mean		1999-11-13
		John Barekman pose la question : Statitistics: Estimating the population mean when the standard deviation is known: I am not sure which n to use in the formula for the confidence interval equation: x +/- z*(standard deviation/sqrt(n)) If we have data of ten people, and if we have the data of ten sets of ten people each, what is the difference in the n that we use? What is the difference between the standard deviation and the standard error? Are we using the number of sampling means or just the number of samples? Harley Weston lui répond.
	Mean, median and mode		1999-11-06
		Rick pose la question : I have five number places and the mean and median are both "0". The mode is greater than the mean. The sum of the absolute values of all of the numbers is 20. The smallest number is 4 less than the next smallest number. What are the five numbers. (negative integers can be used) All of the numbers are integers. Penny Nom lui répond.
	Prime dates		1999-03-25
		Jessica Brown pose la question : I'm asking how do you figure out all the prime numbers in a year and, whats the average amount of prime numbers per week. Jack LeSage and Penny Nom lui répond.
	Mean and Standard Deviation		1998-04-22
		Kit pose la question : i have a problem of maths. i think the level of the question is secondary. question: Find the mean and the standard deviation of the numbers:1, 3, 4, 5, 7. i hope u solve this question. thank you so much! Harley Weston lui répond.
	The normal distribution.		1997-03-21
		Donna D.Hall pose la question : I am looking for a proof for the normal distribution. I suppose "proof" was not a good choice of words. What I am looking for is a way to "derive" the normal distribution in simple terms so that the most average teenager can see the logic. Can you help me? Harley Weston lui répond.

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