Question

Hello there I would like to see if you can help me with question 2 please. This is just a practice test it’s not graded just want to see if I work out the problem the right way.

Answer 1

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:

`s^2=(\sum ^n_(i\mathop=1)(xi-x^-)^2)/(n)`

s² = 116. 3 / 30 = 3.877

Standard deviation:

`s\text{ = }\sqrt[]{s^2}=\sqrt[]{3.877}=1.97`

The answer is:

variance = 3.877

standard deviation = 1.97