Mean of 100 observations is 50. If one observation 50 i... – Statistics

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Mean of 100 observations is 50. If one observation 50 is replaced by 150, the new mean is:

A50

B51

C52

D60

✓ Correct Answer: B — 51

Increase in sum = 150 - 50 = 100. Increase in mean = 100 / 100 = 1. New mean = 51.

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