Your software company has been contracted to write a prototype program to perform simple statistical evaluations of integer data. Your program needs to implement the following functions:

def calcMean (scores, count)

// Where scores is an an array/list of integers and

// count is the number of items in the array

// mean is essentially the same as the average.

// return the mean of the data in scores as a float

def calcMedian (scores, count)

// Calculate the median value for the data in scores

// Median is middle value if the number of items is odd

// or the average of the middle two values if the number

// of items is even.

def calcVariance (scores, count)

// Calculate the variance value for the data in scores

// variance is determined using the formula:

the sum of the square of the values / count

- square of the sum of the values / square of the count

def calcStdDev (variance)

// Calculate the standard deviation value for the data in scores

// standard deviation is the square root of the variance

def Histogram ()

// Print a histogram of the data in scores

// the bar chart in chapter 6.10 will give you a

// good starting point.

You will also need to provide a main program to exercise the functions and a few sample data sets that you use to test the program.