Question

(c) To find the average of 7, 8 and 9 we divide. .. by 3.​

Answer 1

Answer:

9is the average

Step-by-step explanation:

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Answer 2

Answer:

3, −7, 5, 13, −2

The sum of these numbers is 3 − 7 + 5 + 13 − 2 = 12

There are 5 numbers.

The mean is equal to 12 ÷ 5 = 2.4

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