Question

Write a program that inputs up to 100 real numbers from the keyboard (one at a time). When a number greater than 1.0e9 is input the keyboard input will stop. Then the following statistic for the input data will be computed and printed out to the screen.

a) average

b) standard deviation

c) minimum value

d) maximum value

e) range = (maximum-minimum)/2

f) the number of times zero is input

**Note: this is a program in C++**

3) Write a program that inputs up to 100 real numbers from the keyboard (one at a time). When a number greater than 1.0e9 is input the keyboard input will stop. Then the following statistics for the input data will be computed and printed out to the screen. a) average b) standard deviation c) minimum value d) maximum value e) range = (maximum - minimum) / 2 f) the number of times zero is input

Answer 1

Program:

#include<iostream>
#include<cmath>

using namespace std;

int main()
{
float num,sum=0.0,average,sd=0.0;
float arr[100];

int count=0;
for(int i=0;i<=99;i++)
{
cout<<"Enter a real number: ";
cin>>num;
if(num>1.0e9) // 1.0e9 = 1000000000
{
break;
}
arr[i]=num;
sum=sum+num;
count++;
}
average=sum/count; //to get average

int zero=0;
float min=arr[0];
float max=arr[0];
for(int i=0;i<count;i++)
{
sd=sd+pow(arr[i]-average,2);//code for standard Deviation but without square root
  
if(min>arr[i]) //code for Minimum Value
{
min=arr[i];
}
if(max<arr[i]) //code for maximum value
{
max=arr[i];
}
if(arr[i]==0) // code for occurences of zero
{
zero++;
}
  
}

float range=(max-min)/2; // to get range

cout<<"\nAverage: "<<average<<endl;
cout<<"Standard Deviation: "<<sqrt(sd/count)<<endl; //to get Standard Deviation
cout<<"Minimum Value: "<<min<<endl;
cout<<"Maximum value: "<<max<<endl;
cout<<"Range: "<<range<<endl;
cout<<"The number of times zero is input: "<<zero<<endl;
return 0;
}