If the frequency of 12, 15 and 20 are (f...

If the frequency of 12, 15 and 20 are (f + 2), f, (f -1) respectively and the mean of this frequency distribution is 14.5, then f =

A

2

B

3

C

4

D

5

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UNITED BOOK HOUSE-Statistics : Mean, Median, Ogive, Mode-Exercise

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The mean of a frequency distribution is 8.1, if fixi = 132 + 5K and f...
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Median of 112, 98, 12, 62, 48, 30, 74, 94 is
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Mode is
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