Question

In the data set below, what is the variance?

Answer 1

Answer:

Step-by-step explanation:

First the mean= (1+6+7+2+9)/5=25/5=5

The Variance is taking the difference by subtracting , square it, and then average the result:

1-5=-4         -4²=16

6-5=1           1²=1

7-5=2           2²=4

2-5=-3          3²=9

9-5=4            4²=16

                    Total: 16+1+4+9+16=46

Variance= 46/5=9.2