Let x 1 , x 2 , x 3 , x 4 and x 5 be the observations with mean m and standard deviation…
Mathematics · JEE Main · NTA Exams — Statistics and Probability
Let x1, x2, x3, x4 and x5 be the observations with mean m and standard deviation s. Then, standard deviation of the observations kx1, kx2, kx3, kx4 and kx5 is
- k + s
- s/|k|
- |k|s
- s
Answer
(C) |k|s
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