EXERCISE 3.3
(1) The following data show the number of books read by 8 students of a class during last month. 2, 1, 5, 9, 1, 3, 2, 4 her of hooks read using geometric mean
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Find the mean, variance and standard deviation for the following frequency distribution.
Class 0-30 30-60 60-90 90-120 120-150 150-180 180-210
Frequency 2 3 5 10 3 5 2
Medium
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