First slide

Introduction to statistics

Question

The harmonic mean of 4,8, 16 is

Moderate

A

6.4
B

6.7
C

6.85
D

7.8

Solution

$H.M. of 4, 8, 16 = \frac{3}{\frac{1}{4} + \frac{1}{8} + \frac{1}{16}} = \frac{48}{7} = 6.85$

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