Write a function that determines standart deviation of float array. The function takes dataset as a float array parameter!! And it also return result as a float. (Clue: calculate average first)...

Write a function that determines standart
deviation of float array. The function takes dataset as a
float array parameter!! And it also return result as a
float.
(Clue: calculate average first)

Definations: in the image

σ = 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”)