Respuesta :
Answer:
The variance of the given sample is 7.3
Hence the option A. 7.3 is correct
Step-by-step explanation:
The formula of Variance is:
[tex]Var=\frac{\sum (x- \bar{x})^2}{n-1}[/tex]
x [tex](x-\bar{x})^2[/tex]
10 4
15 9
8 16
16 16
14 4
12 0
9 9
12 0
14 4
10 4
[tex]\sum ( x - \bar{x}) ^2 = 66[/tex]
Therefore, the variance is:
[tex]Variance = \frac{66}{10-1} =7.3[/tex]