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
