Question

Please give me the answer

Answer 1

13.9

Explanation:

Mean is total (sum) divided by number of values

Mean = sum/num

mean1 = 13.9 = sum1/10

sum1 = 10 x 13.9 = 139

mean2 = 13.9 = sum2/11

sum2 = 11 x 13.9 = 152.9

Total mean = total sum/total num

total sum = 139 + 152.9 = 291.9

total num = 21

291.9/21 = 13.9

Answer 2

13.9

Explanation:

To find the mean, add the two numbers and divide by two.

(13.9+13.9)/2=13.9