Question

The time for degree completion was record below.

Years

4 | 6 | 5 | 6 | 5 | 8 |

Calculate the standard deviation.

Step 1

**Calculation:**

The number of observations on time for degree completion (years) is, *n* = 6. Denote *x _{i}* as the

In order to find the standard deviation, first, it is necessary to calculate the mean as follows:

Step 2

**Variance:**

The standard deviation is the square root of the variance. Now, the variance is calculated as follows:

Step 3

**Standard deviation:**

The standard deviation, *σ*, which is the square root of the variance, is:

*σ* = √(14/9) = √(14)/3 &asy...

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