C++

Don't worry about defining them and declaring them in either header file or .cpp file thanks.

You can find a nice example of calculating the standard deviation of a list of numbers here: http://www.mathsisfun.com/data/standard- deviation-formulas.html (Note that we want population standard deviation, not sample. Population is what is shown first). Then for each score, your program should print out a letter grade based on the following criteria: Student's Scores Is Grade Is More than 1 times the standard deviation below the average F 0.5-1 standard deviation below the average D Less than 0.5 standard deviations below or above the average 0.5-1 standard deviations above the average B More than 1 times the standard deviation above the average A Sample run Enter 10 scores: 70 85 75 65 82 96 58 93 86 90 The average is: 80.0 The standard deviation is: 11.9 Student: 1 2 3 4 5 6 7 8 9 19 Grade: DCC FCA FABB Why is student 1's grade a D? They scored 70, which is 10 less than the average. Divide that by the standard deviation of 11.9 and you get - 84, so they are between 0.5 and 1.0 standard deviations below the average. Student 2 got a C because their 85 is 5 above the average. Divide 5 by 11.9 and you get - 42. They are less than 0.5 standard deviations above the average, so C. Functions You should write and use the following functions to help do your work. You can add others as you see fit. Declare your functions in gradeFunctions.h, define them in gradeFunctions.cpp, and use them in your main function in assign7.cpp. void getArrayData(int scores[], int size) Reads in values from the keyboard into the array double average(const int scores(), int size) Calculate the mean of an array double standardDeviation(const int scores[], int size, double mean) Calculate the standard deviation of an array given its values and its mean char getLetterGrade(int score, double mean, double stdDev) Calculate a letter grade for one score given a mean and standard deviation based on the logic described above. Examples: Given a score of 70, mean of 80.0, and std deviation of 11.9: The score is 10 below the mean. That is more than 0.5 times the standard deviation below the mean but less than 1.0 standard deviations below the mean. That means a grade of 'D! Given a score of 96, mean of 80.0, and std deviation of 11.9: The score is 16 above the mean. That is more than 1.0 standard deviations above the mean. That means a grade of 'A