Question

Find the average of all scores if there are:

ten scores of 9
eight scores of 8
ten scores of 7
three scores of 6
Round to one decimal place.

Answer 1

The answers is 7.806 but you can round it to the nearest decimal

Answer 2

7.8

Explanation:

ten scores of 9 = 10(9) = 90

eight scores of 8 = 8(8) = 64

ten scores of 7 = 10(7) = 70

three scores of 6 = 3(6) = 18

the total number of scores is = 10 + 8 + 10 + 3 = 31

`(90+64+70+18)/(31)\\\\=(242)/(31) \\\\=7.8064516129032258064516129032258064516129032258064516129032258064..\\\\=7.8`