biaozhuncha.rar_不确定_不确定度_不确定度计算_标准差

# include <iostream.h> # include <math.h> double detal_d() { double d1, d2; cout<<"请输入实验数据：\n"; cin>>d1; cin>>d2; return fabs(d2-d1); } double equal(double * p, int n) { double s=0; for(int i=0;i<n;i++) s+=p[i]; double equal; equal=s/n; return equal; } double Sd(double * p, int n, double equal) { double Sd=0; double c; for(int i=0;i<n;i++) { c=(p[i]-equal)*(p[i]-equal); Sd+=c; } Sd=Sd/(n-1); Sd=sqrt(Sd); return Sd; } double choose_t(int i) { double t; switch (i) { case 2: t=9.0; break; case 3: t=2.5; break; case 4: t=1.6; break; case 5: t=1.2; break; case 6: t=1.05; break; case 7: t=0.93; break; case 8: t=0.84; break; case 9: t=0.77; break; case 10: t=0.72; break; case 15: t=0.55; break; case 20: t=0.47; break; case 30: t=0.37; break; default: t=0; break; } return t; } double UA(double Sd, double t) { double UA; UA=Sd*t; return UA; } double UB() { double UB=0.00010; return UB; } double U(double UA ,double UB) { double U; U=UA*UA+UB*UB; U=sqrt(U); return U; } void display_p(double * p,int n) { for(int i=0;i<n;i++) cout<<p[i]<<endl; } void main() { int n; double t,a,b,e,s; cout<<"请输入需要记录的实验数据组数："<<endl; cin>>n; double * d=new double[n]; for(int i=0;i<n;i++) d[i]=detal_d(); display_p(d,n); e=equal(d,n); s=Sd(d,n,e); t=choose_t(n); a=UA(s,t); b=UB(); cout<<"t "<<t<<endl; cout<<"equal "<<e<<endl; cout<<"标准差"<<s<<endl; cout<<"不确定度UA "<<a<<endl; cout<<"不确定度UB "<<b<<endl; cout<<"不确定度U "<<U(a,b)<<endl; delete [] d; }