Mathematics

Mathematics

Problem

A set of

20

observations has

\sum x_i = 150

and

\sum x_i^{2} = 1300

. Each observation is transformed according to

y = 3x - 2

. Determine the standard deviation of the

y

-values (rounded to one decimal place). a)

6.9

b)

2.9

c)

8.9

d)

9.1

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