In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
automobile rental agency:
number of station wagons rented
Step 02:
Variance and standard deviation:
Calculation Table:
variance:
[tex]s^2=\frac{\sum ^n_{i\mathop=1}(xi-x^-)^2}{n}[/tex]
s² = 116. 3 / 30 = 3.877
Standard deviation:
[tex]s\text{ = }\sqrt[]{s^2}=\sqrt[]{3.877}=1.97[/tex]
The answer is:
variance = 3.877
standard deviation = 1.97
