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The following are the last 10 run scores Colin got in cricket:
19, 15, 34, 29, 13, 35, 10, 19, 14, 22
a) Work out Colin's mean score.
b) Colin plays cricket again on Sunday. He gets 21 runs.
What is his new mean score?

Respuesta :

marcthemathtutor

Answer:

a) 21

b) 21

Step-by-step explanation:

Given 10 scores: 19, 15, 34, 29, 13, 35, 10, 19, 14, 22

a) Mean

= (sum of scores) / number of scores

= (19+15+ 34+ 29+ 13+ 35+ 10+ 19+ 14+ 22) / 10

= 210 / 10

= 21

b) one more score of 21 is added

hence

number of scores = 10 + 1 = 11

sum of scores = 210 + 21 = 231

Mean = (sum of scores) / number of scores

= 231 / 11

= 21