Question

Asked Sep 8, 2019

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Describe the three measures of variability; the *range*, *variance*, and *standard deviation. * Explain the impact of *outliers *on measures of variability.

Step 1

In statistics, there are four measure of variability of distribution that measures the spread in the data set.

The four measure of variability as given below:

- Range
- Inter-quartile range
- Variance
- Standard deviation

Step 2

**Range: **range is the difference between highest value and lowest value in the data set.

**Variance :**Population variance is the measure of variability of the data that is how far away our data points from the average value.

Population variance can be calculated as below:

Step 3

**Standard deviation: ** it is the square root of variance of the data set that is square root of average squared distan...

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