Question

Find the variance of the sample data set.

127 135 128 131 133 127 122

A.
2.0

B.
4.4

C.
19.0

D.
4.0

Answer 1

@rainbow.bubbles

Answer 2

Order the values:
122, 127, 127, 128, 131, 133, 135

Answer 3

i did that

Answer 4

19 is your answer! :)

Answer 5

can you explain how ?

Answer 6

\[s^2= \frac{ 1 }{ n-1 } \sum_{i=1}^{n}(x _{i} - x)^2\]

Answer 7

so just follow that equation ?