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The weekly salaries of a sample of employees at the local bank are given in the table below. Employee Weekly Salary Anja $245 Raz $300 Natalie $325 Mic $465 Paul $100 What is the variance for the data? Variance: mc006-1.jpg

Jennifer Patterson

in Mathematics

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Kaitlin Dean on July 17, 2018

Step 1 - Find the mean (average):245 + 300 + 325 + 465 + 100 = 14351435/5 = 287 ( average)2nd step look for the sun of the sqaure of the difference between the gievn data and the mean287 - 245 = 42^2 = 1,764300 - 387 = 13^2 = 169325-287 = 38^2 = 1,444465 - 287 = 178^2 = 31,684287 - 100 = 187^2 = 34,9691,764 +169 + 1,444 + 31,684 + 34,969 = 70,030 It is now divided by the number of samples less 1 ( 5-1=4)70,030 / 4 = 17,507.5 The variance = 17, 507.5


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