SOLUTION: Below are the times (in days) it takes for a sample of customers from Jack's computer store to pay their invoices.
26, 35, 37, 41, 31
Find the standard deviation of this sample
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Question 1143169: Below are the times (in days) it takes for a sample of customers from Jack's computer store to pay their invoices.
26, 35, 37, 41, 31
Find the standard deviation of this sample of times. Round your answer to two decimal places.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
given:
, , , ,
find mean :
find the variance, subtract the mean from each of the values:
Now square all the answers you have got from subtraction.
add all the squared numbers:
divide the sum of squares by , in your case
so,the variance is
find the square root of variance to find the standard deviation :
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