## anonymous one year ago 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

1. anonymous

@rainbow.bubbles

2. anonymous

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

3. anonymous

i did that

4. anonymous

5. anonymous

can you explain how ?

6. anonymous

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

7. anonymous

8. anonymous

so just follow that equation ?