Question

chloe records the number of goals scored by her favourite football team in each of 40 matches.

number of goals frequency
0 7
1 15
2 13
3 2
4 2
5 1

calculate the mean number of goals scored per match.

Answer 1

Chloe records the number of goals scored by her favourite football team in each of 40 matches.

Calculate the mean number of goals scored per match.

Solution:

The number of goals scored by Chloe's favourite football team in all 40 matches is:

$$0 * 7 + 1 * 15 + 2 * 13 + 3 * 2 + 4 * 2 + 5 * 1 = 0 + 15 + 26 + 6 + 8 + 5 = 60.$$

The mean number of goals scored per match is:

$$60 : 40 = 1.5.$$

Answer: 1.5