







The test for some disease is 99% accurate 
20100224 

baaba pose la question : Assume that the test for some disease is 99% accurate. If somebody tests positive for that disease, is there a 99% chance that they have the disease? Chris Fisher lui répond. 





Accuracy of Data 
20090625 

Bill pose la question : If say, a predictin is 20 and the actual is 35 how do you work out the accuracy of the prediction Janice Cotcher lui répond. 





How accurate is the following calculation? 
20080903 

Craig pose la question : Given that these numbers are only accurate to 2 decimal places, how accurate is the following calculation?
1.73  2.16 + 0.08 + 1.00  2.23  0.97 + 3.02 = 0.47
How do I work out the accuracy? Penny Nom lui répond. 





Calculations 
20021215 

Mahdi pose la question : This problem is rather general, but it usually makes a lot of problems. I almost have no difficulty in math and physics questions, but unfortunately I'm not at all accurate in simple one or two digit calculation. I even sometimes make silly mistakes in simple sums like 7+4=12 or 4+5=11! Is there any effective way to reduce these mistakes? Walter Whiteley lui répond. 

