5 articles trouvés pour ce sujet.
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Coefficient of variation |
2011-04-14 |
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Braden pose la question :
When determining coefficient of variation (CV) or %CV is it possible to calculate %CV for two variables? For instance can %CV be used to determine the precision of 5 data points on a graph using the X and Y coordinates? or does %CV need to be determined for each variable separately?
Robert Dawson lui répond. |
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Coefficient of variation |
2008-12-17 |
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JR pose la question :
I have read your reponses regarding the coeffcient of variation (CV) and find them very useful. I still have a question about interpreting the CV. Let's that the CV of sample #1 is 3% and that of sample #2 is 12%. Can I report that Sample #2 is 4 times more variable than sample #1? Thanks in advance!
Robert Dawson lui répond. |
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The coefficient of variation |
2006-05-20 |
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Glenn pose la question :
What is the correct formula for coefficient of variation for a binomial distribution?
Penny Nom lui répond. |
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Coefficient of variation |
2005-10-19 |
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Jan pose la question :
I am currently teaching the coefficient of variation and am wondering if there are some guidelines as to the interpretation of this statistic. I understand that it measures the variation in a variable relative to the mean - but what is the cut off for "too much" variation expressed in this way???
Andrei Volodin and Penny Nom lui répond. |
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Ciefficient of variation |
2001-09-23 |
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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. |
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