Look at this set of 7 numbers: 8 2 5 1 8 2 2 By how much would the mean increase if the number 8 replaced the number 1 in the set?

Question

asked Jun 20, 2024 74.2k views

1 Answer

Ryan Li · Answer 1 · 2024-06-24T13:00:20+0000

Answer: 1

Explanation:

Current Mean:

8 + 2 + 5 + 1 + 8 + 2 + 2 = 28

28 / 7 = 4.

So 4 is the current mean.

If you replace 1 with 8:

8 + 2 + 5 + 8 + 8 + 2 + 2 = 35

35/7 = 5

So the new mean is 5.

5 - 4 = 1