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Marks of 11 students are: 73, 64, 74, 81, 77, 71, 75, 78, 59, 72 and 74. What is the standard deviation of their marks?

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Marks of 11 students are: 73, 64, 74, 81, 77, 71, 75, 78, 59, 72 and 74. What is the standard deviation of their marks?
posted Jul 26, 2018 by anonymous

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1 Answer

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Total Numbers- 11
Sum- 798
Mean (Average)- 72.55
Standard Deviation- 6.25

answer Jul 26, 2018 by Hanifa Mammadov



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