Question

harmonic mean 18,37,42,49,58,87,88 find harmonic mean​

Answer 1

Answer:

Dear arshi .did you solved all the 5 questions of maths paper?contact me ,I have 4.9572433002..

Step-by-step explanation:

Answer 2

The harmonic mean 18,37,42,49,58,87,88 is 41.94

Solution:

We have to find the harmonic mean

Given data set is:

18, 37, 42, 49, 58, 87, 88

Number of observations = 7

n = 7

The formula for harmonic mean is:

$\text{Harmonic Mean}=\dfrac{n}{\dfrac{1}{x_1}+\dfrac{1}{x_2}+\dfrac{1}{x_3}+....\dfrac{1}{x_n}}$

Where,

$x_i$   denotes the values of the data

$\text{Harmonic Mean}=\dfrac{7}{\dfrac{1}{18}+\dfrac{1}{37}+\dfrac{1}{42}+\dfrac{1}{49}+\dfrac{1}{58}+\dfrac{1}{87}+\dfrac{1}{88}}\\\\\\\\\text{Harmonic Mean} =\dfrac{7}{0.166899538205}\\\\\\\\\text{Harmonic Mean}=41.9413982524\approx41.94$

Thus harmonic mean is 41.94

Learn more:

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