Question

the geometric mean for the series 1,3,9 is
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Answer 1

Answer:

mean= sum of observations/number of observations

mean=1+3+9/3

mean=13/3=4.3

I hope this answer will help you

Answer 2

Given:

A series: 1, 3, 9

To find:

The geometric mean

Solution:

The required value is 3.

We can obtain the mean value by using the following formula.

The total terms in the series, n=3

So, the required geometric mean=$\sqrt[n]{product }$

We will obtain the third root of the given terms' product.

Using the values,

=∛(1×3×9)

=∛27

=3

Therefore, the required value is 3.