Question

If the AM and GM for 10 observations are both 15, then the value of HM is
(a) Less than 15
(b) More than 15
(c) 15
(d) Can not be determined.​

Answer 1

Answer:c) 15

Yes the answer is 15...

Answer 2

Answer:

The value of HM is option c i.e. 15

Step-by-step explanation:

• The harmonic mean is defined as the reciprocal of the arithmetic mean of the reciprocals.
• The geometric mean is defined as the average of a set of products.
• Arithmetic mean is defined as the average of the numbers.

• The relationship between AM, HM, GM is given by

     $AM*HM=GM^2$

     $15*HM=15^2\\HM=15$

Conclusion:

The harmonic mean is 15.