MATH 110 Module 2 Standard Deviation Worksheet 1 | Practice Questions & Answers 2026/2027

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Standard Deviation Worksheet


1. Calculate the mean and standard deviation of each data set
(a) 20 21 19 22 21 20 19 20 21 20
(b) 303 299 306 298 304 307 299 302 305 299 300
(c) 15∙3 14∙9 15∙1 15∙2 14∙8 14∙7 15∙1 14∙8 15∙0 15∙0
(d) 87 89 84 88 89 87 86 87 86 87



2. The temperatures, in oC, at a seaside resort were recorded at noon over a
10-day period.

19 20 19 17 21 18 19 24 25 28




Calculate the mean and standard deviation.



3. John plays golf with his brother Joe each month. They keep a note of
their scores.

74 73 74 73 71 73 72 75 73 73 72 73
John
68 74 70 67 80 81 69 68 79 67 70 71
Joe



Calculate the mean and standard deviation and comment on John and
Joe’s performance over the year.




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