TO FIND ARITHMETIC MEAN BY STEP DEVIATION METHOD

TO FIND ARITHMETIC MEAN BY STEP DEVIATION METHOD

	// STEP DEVIATION METHOD
	//X=A+ (sum(fd')/N) *c
	#include<iostream>
	#include<conio.h>
	using namespace std;
	int main()
	{
	int n,i,mid,l,h,amean;
	float mean,c,m[20],f[20],d[20],dz[20],profd[20],sf=0,sfd=0;
	cout<<"Developed by: Raja Vikrant Sharma";
	cout<<"\nEnter number of terms : ";
	cin>>n;
	for(i=0;i<n;i++)
	{
	cout<<"\nEntry: "<<i+1<<"\nEnter lower limit: ";
	cin>>l;
	cout<<"\nEnter Upper Limt: ";
	cin>>h;
	m[i]=(l+h)/2;//mid value
	cout<<"\nEnter [ "<<l<<"-"<<h<<" ]Frequency: ";
	cin>>f[i];
	sf=sf+f[i];//sum of frequency
	}
	c=m[1]-m[0];//calculating deviation c
	mid=n/2;
	amean=m[mid-1];//according to array location
	cout<<"\nAssummed Mean :"<<amean;
	for(int k=0;k<n;k++)
	{
	d[k]=m[k]-amean;// Taking out d=m-A
	dz[k]=d[k]/c ;
	}
	cout<<"\n\|M\t\|F\t\|D\t\|D'\t\|\n";
	cout<<"---------------------------------\n";
	for(i=0;i<n;i++)
	{
	cout<<"\| "<<m[i]<<"\t\| "<<f[i]<<"\t\| "<<d[i]<<"\t\| "<<dz[i] <<"\t\|\n";
	profd[i]=f[i]*dz[i];
	sfd=sfd+profd[i];
	}
	cout<<"\nTotal Freq. = "<<sf<<"\nSum of Freq.x d :"<<sfd;
	mean=amean+((sfd/sf)*c);
	cout<<"\n\nMean of the given data is :"<<mean;
	getch();
	return (0);
	}

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