C languag

a as 3-(30p) Write function that determines standart deviation of float array. The function takes dataset as a float array parameter!! And it also return result float. (Clue: calculate average first) Definations: N 1 o= (x1 - x) 1.D N - standard deviation xi - each value of dataset X (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 Hibrary. Usage example: a-sqrt(b) which means "a" 19 equal to square root of "5")