Statistics

Function: Call by reference$/$address practice problem

Write a function that computes the mean average and standard deviation of $4$ scores. The function will

have six parameters:

$4$ scores passed by value

$$ Mean passed by reference

$$ Standard Deviation passed by reference

The function will call two other functions to calculate the mean and standard deviation.

Embed the function in a driver program that allows you to test the functions repeatedly until you tell

the program you are finished.

Input validation is required.

Documentation with function prologs and pseudocode is also required.

Submission: Source code and test log

Overview of how to calculate standard deviation

The formula for standard deviation $($SD$)$ is

$=||2$

$$

Where x is the value of one score, is the mean of the data, and N is the number of scores supplied

The standard deviation formula may look confusing, but here$$s a view of the steps we're about to

follow:

$$ Step $1$: Find the mean.

$$ Step $2$: For each data point, find the square of its distance to the mean.

$$ Step $3$: Sum the values from Step $2.$

$$ Step $4$: Divide by the number of data points.

$$ Step $5$: Take the square root.