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Question
The standard deviation of the data 8, 7, 1, 15, 14, 10, 12 is ______.
Options
`sqrt(52/7)`
`52/7`
`sqrt(6)`
6
MCQ
Fill in the Blanks
Solution
The standard deviation of the data 8, 7, 11, 15, 14, 10, 12 is `sqrt(52/7)`.
Explanation:
S.D. = `sqrt(1/"n" (sum_("i" = 1)^"n" x_"i"^2) - (barx)^2`
= `sqrt(1/7(899) - (11)^2`
= `sqrt((899 - 847)/7)`
= `sqrt(52/7)`
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Standard Deviation
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