What is the mean of 198, 203, 241, 255, 211, 199, 198?
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2 Answers

The usual way of finding the mean within a dataset is to add the data values together and divide by the number of values in the set. An easier way is to remove a bias (in this case 200 as an easy number) first and take off the bias from each value before adding: -2, 3, 41, 55, 11, -1, -2. Added together we get 105, divided by 7=15. Add back the bias=215, so the mean is 215.
by Top Rated User (788k points)

Given 198, 203, 241, 255, 211, 199, 198
Mean = (198+203+241+255+211+199+198)/7
Mean = 215

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by Level 8 User (30.1k points)

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