standard deviation?

[rando1992]

hi all, im new here;
i need help about how to make a standard deviation in C++ using codes ?
thanks

[rando1992]

using basic things because im a beginner ..

[Rocketx100]

please tell me the formula and the requirements for the formula of standared deviation

[Duthomhas]

Remember that in programming, you must declare things before you use them.

For example, given y = mx + b , to get y you must first have m, x, and b.

1 2 3 4 5 6 7 8 9 10

double m = 0.5; double b = 4; double x; cout << "What is x? "; cin >> x; double y = m*x + b; cout << "Point is (" << x << "," << y << ")\n";

What is x? 0 Point is (0,4) What is x? 4 Point is (4,6) What is x? -12 Point is (-12,-2)

You will do the same sort of thing, except instead of a line you are calculating your standard deviation. You need your list of input samples (use an array), a function to compute the mean (or average) of the array, and a temporary array (for the variances).

Hope this helps get you started.