Question

Be harmonic mean of 5,6,7,8?

Answer 1

Answer:

$\sqrt{5 \times 6 \times 7 \times 8 } = 758.318$

Step-by-step explanation:

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Answer 2

Given : terms = 5,6,7,8

To find : harmonic mean (H.M.) of given terms

Step-by-step explanation:

The formula used here for harminc mean is written below:

$H.M. = n/(\frac{1}{x_{1} } +\frac{1}{x_{2} } + \frac{1}{x_{3} } + \frac{1}{x_{4} } )$  ---- (1)

$here, x_{1} = 5 , x_{2} = 6 , x_{3}=7, x_{4}=8, n=4$

Put the value of all terms in eq.(1)

$H.M. = 4/(\frac{1}{5} } +\frac{1}{6} } + \frac{1}{7} } + \frac{1}{8} } )$

$H.M. = 4/(\frac{168+140+120+105}{840} })$

$H.M. = 4/(\frac{533}{840} } )$

$H.M. = \frac{4}{0.634}$

$H.M. = 6.309$

Therefore, the harmonic mean of given data is 6.309.

Harmonic mean = It is the reciprocal of the average of a given data.