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#include <deque> #include <algorithm> #include <iostream> using namespace std; template <typename T> double mean(T begin, T end) { double sum=0, count=0; while(begin!=end) { sum+=*begin++; count++; } return sum/count; } template <typename T> double stan_dev(deque<T>&d){ double dev_sum=0,dev,dev_sqr,st_dev; double mn=mean(d.begin(),d.end()); for(int it=0;it<(int)d.size();++it){ T val=d[it]; dev= val-mn; dev_sqr = dev*dev; dev_sum+=dev_sqr; cout<<"\n Deviation at for age # "<<d[it]<<" is "<<dev; cout<<"\n Deviation squared for age # " <<d[it]<<" is "<<dev_sqr; cout<<"\n Summing up so far .. "<<dev_sum; } st_dev=sqrt((dev_sum/d.size())); return st_dev; } int main() { deque<double> d; d.push_back(1); d.push_back(2); d.push_back(3); cout << endl << stan_dev(d); return 0; }
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