You are going to develop a program for displaying statistics of a classroom.

Get the student number from the user. According to this number, create an array of random grades (between 0-100, int or double up to you).

Display the elements in a comma sperated list.

As a last step, call displayStatistics method to print the average and standard deviation of these grades.

you can ONLY use Math.sqrt() and MAth.pow() as a pre-defined method.