Find the average of a listed set of numbers

The same question, asked 2 times: 2 Mar 2023 Tier II*, 7 Mar 2023 Tier II. Every wording below, oldest first.

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Question 1
2 Mar 2023 Tier II
28 $The arithmetic mean of the following data is _________. 23, 17,20,19,21$
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Question 2
7 Mar 2023 Tier II
1 $Find the average of the following sets of numbers. 693, 456, 876, 532, 934, 691, 596, 398, 682$
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