The ages (in years) of a random sample of shoppers at a gaming store are given below: 12 19 23 14 20 16 21 18 14 19 What is the variance

the required variance is 11.6555

Step-by-step explanation:

Given data;

xi = 2 19 23 14 20 16 21 18 14 19

mean x" = 2+19+23+14+20+16+21+18+14+19 / 10

mean x" = 166 / 10 = 16.6

so;

X      xi - x"   (xi - x")²

12     -4.9     24.01

16     -0.9     0.81

23     6.1      37.21

13     -3.9     15.21

18      1.1       1.21

18      1.1       1.21

19      2.1      4.41

18      1.1       1.21

13     -3.9     15.21

19      2.1      4.41

Total           104.9

Variance =  n_i=1∑(xi - x")² / n-1

Variance = 104.9 / 9

Variance = 11.6555

Therefore, the required variance is 11.6555

f

step-by-step explanation:

f

mark branliest

step-by-step explanation:

.6 is 1/2 of 12

the answer is actually d. i just took the test