Concept explainers
To calculate: The variance of
Answer to Problem 16E
The variance is
Explanation of Solution
Given information:
We know the standard deviation.
Formula used:
A measure of variability associated with the arithmetic mean is the standard deviation.
The variance is the mean of the squares of the deviations from
The standard deviation is the positive square root of the variance.
Calculation:
Calculation:
Consider the data ,
So,
The mean of the data is
Therefore , the standard deviation is −
13 | 43 | ||
22 | 43 | ||
34 | 43 | ||
55 | 43 | ||
91 | 43 | ||
Hence, the variance is
Chapter 14 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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