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NDA 2021

Exam: NDA
Year: 2021
Subject: Mathematics
Chapter: Statistics

NDA 2021 · Mathematics · Statistics

Consider the following measures of central tendency for a set of N...

Consider the following measures of central tendency for a set of

N

numbers : 1. Arithmetic mean 2. Geometric mean Which of the above uses/use all the data?

Options

A $1$ only
B $2$ only
CBoth $1$ and $2$
DNeither $1$ nor $2$

Correct answer

A. $1$ only

Step-by-step solution

(i) Arithmetic mean

=\frac{\text{ Sum of observation }}{\text{ Number of observation }}

(ii) Geometric mean

=\sqrt[n]{\text{ Product of } \mathrm{n} \text{ observation }}

Here, only Arithmetic mean measures central tendency.

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