//Define a function that takes a partially filled array of numbers

//as its argument and returns the standard deviation of the numbers in

//the partially filled array. Since the partially filled array requires

//two arguments, the function will have two formal parameters: an array

//parameter and a formal parameter of type int that gives the number of the

//array positions used. The numbers in the array will be double. The task is

//the standard deviation of a list of numbers is a measure of how much the number

//deviate from the average. If the standard deviation is small the numbers are

//clustered close to the average and if the standard deviation is large, the numbers

// are scattered far from the average. The standard deviation, S,of a list of N

//numbers x, is defined as follows: where x is the average of N.

S = think square root symbol, N, sum(x, -x)to second power, i = 1, over N

I have not started the code yet as I have no real idea of what this wants .... if it could be explained or shown to me of what is required then I can start building code for this .... does anyone understand this enough to help me...