Mean, median, mode of grouped data, cumulative frequency curves (ogives).
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Q1 · Statistics (Class 10) · EASY
The mean of 5 observations is 15. If one observation 20 is replaced by 30, what is the new mean?
Q2 · Statistics (Class 10) · EASY
Find the mean of the following data: 12, 18, 15, 20, 25.