Question

The following are the last 10 run scores Colin got in cricket: 31, 10, 26, 16, 28, 31, 9, 11, 8, 1 a) Work out Colin's mean score. b) Colin plays cricket again on Sunday. He gets 27 runs. What is his new mean score? Give your answers as decimals.

Answer 1

a) 17.1

b) 18

Explanation:

a)

(31+10+26+16+28+31+9+11+8+1)÷10=

171÷10=

17.1

b)

(31+10+26+16+28+31+9+11+8+1+27)÷11=

198÷11=

18