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Question
If the S.D. of the data 1, 2, 4, 5, 6, 7, 9 is 2.59, then the S.D. of 3, 6, 12, 15, 18, 21, 27 is ______.
Options
2.59
23.31
4.59
7.77
MCQ
Fill in the Blanks
Solution
If the S.D. of the data 1, 2, 4, 5, 6, 7, 9 is 2.59, then the S.D. of 3, 6, 12, 15, 18, 21, 27 is 7.77.
Explanation:
`sigma ("aX") = "a" sigma ("X")`
∴ Required S.D. = 3 x 2.59 = 7.77
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Standard Deviation
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