( Do not use pow )

2 (30p) -Write a function function that determines standart deviation of tloat array. The function takes dataset as a float array parameter!! And it also return result as float. (Clue: calculate average first) Definations: a (x1 - x) IN - standard deviation xi - each value of dataset * (with a bar over it) = the arithmetic mean of the data (This symbol will be indicated as average of dataset) N - the total number of data points (if you need square root of some number you can use sqrt function in math.h library. Usage example: a-sqrt (b): which means "a" is equal : to square root of "b")