Question

Calculate the harmonic means from the following data 6, 10, 15 and 20

Answer 1

Step-by-step explanation:

here is ur answer buddy hope u have got the answer its simple

Answer 2

Answer:

Harmonic mean = 10.435.

Step-by-step explanation:

The harmonic mean exists as a kind of numerical average. It exists estimated by dividing the number of observations by the reciprocal of each number in the series. Therefore, the harmonic mean exists as the reciprocal of the arithmetic mean of the reciprocals. The reciprocal of a number n exists simply 1 / n.

Step 1

The given data are 6, 10, 15, and 20.

To find the harmonic mean.

Harmonic Mean = 1 / n.

Step 2

Substituting the given data in the above equation, we get

$=\frac{4}{\frac{1}{6}+\frac{1}{10}+\frac{1}{15}+\frac{1}{20}}$

$&=\frac{4}{0.3833}=10.435$

Therefore, the Harmonic mean = 10.435.

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