I am trying to write a function to calculate the standard deviation of a vector. I thought I had done it correctly but I get a standard deviation calculation that is not exactly accurate.

so here is what I have:

double deviation (vector <int> stat, double avg)

{ double e = 0;

for (int i = 0; i < stat.size(); ++i)

{e += (stat[i]-avg)*(stat[i]-avg);

}

double v = e/stat.size();

return sqrt(v);

}

Any suggestions as to what might be wrong would be helpful!

Thank you!!!

so here is what I have:

double deviation (vector <int> stat, double avg)

{ double e = 0;

for (int i = 0; i < stat.size(); ++i)

{e += (stat[i]-avg)*(stat[i]-avg);

}

double v = e/stat.size();

return sqrt(v);

}

Any suggestions as to what might be wrong would be helpful!

Thank you!!!

Topic archived. No new replies allowed.