1 answer:
Answer:
Check the explanation
Explanation:
<u>The Code</u>
#include <fstream>
#include <iostream>
#include <cmath>
#include <cstring>
#include <cstdlib>
#include <ctime>
using namespace std;
//Function Declarations
void fillArrayWithRandNos(int nos[],int size);
void displayArray(int nos[],int size);
double mean(int nos[],int size);
double variance(int nos[],int size);
double median(int nos[],int size);
int mode(int nos[],int size);
void histogram(int nos[],int size);
int main() {
//Declaring variables
const int size=100;
srand(time(NULL));
// Creating array dynamically
int* nos = new int[size];
//Calling the functions
fillArrayWithRandNos(nos,size);
displayArray(nos,size);
cout<<"Mean :"<<mean(nos,size)<<endl;
cout<<"variance :"<<variance(nos,size)<<endl;
cout<<"Median :"<<median(nos,size)<<endl;
cout<<"Mode :"<<mode(nos,size)<<endl;
histogram(nos,size);
return 0;
}
void fillArrayWithRandNos(int nos[],int size)
{
for(int i=0;i<size;i++)
{
nos[i]=rand()%(45) + 55;
}
}
void displayArray(int nos[],int size)
{
cout<<"Displaying the array elements :"<<endl;
for(int i=0;i<size;i++)
{
cout<<nos[i]<<" ";
if((i+1)%10==0)
cout<<endl;
}
}
double mean(int nos[],int size)
{
double sum=0;
for(int i=0;i<size;i++)
{
sum+=nos[i];
}
return sum/size;
}
double variance(int nos[],int size)
{
double avg=mean(nos,size);
double variance,sum=0;
for(int i=0;i<size;i++)
{
sum+=pow(nos[i]-avg,2);
}
//calculating the standard deviation of nos[] array
variance=(double)sum/(size);
return variance;
}
double median(int nos[],int size)
{
//This Logic will Sort the Array of elements in Ascending order
int temp;
for (int i = 0; i < size; i++)
{
for (int j = i + 1; j < size; j++)
{
if (nos[i] > nos[j])
{
temp = nos[i];
nos[i] = nos[j];
nos[j] = temp;
}
}
}
int middle;
float med;
middle = (size / 2.0);
if (size % 2 == 0)
med = ((nos[middle - 1]) + (nos[middle])) / 2.0;
else
med = (nos[middle]);
return med;
}
int mode(int nos[],int size)
{
int counter1 = 0, counter2, modevalue;
for (int i = 0; i < size; i++) {
counter2 = 0;
for (int j = i; j < size; j++) {
if (nos[i] == nos[j]) {
counter2++;
}
if (counter2 > counter1) {
counter1 = counter2;
modevalue = nos[i];
}
}
}
if (counter1 > 1)
return modevalue;
else
return 0;
}
void histogram(int nos[],int size)
{
int hist[9]={0};
for(int i=0;i<size;i++)
{
if(nos[i]>=55 && nos[i]<=59)
{
hist[0]++;
}
else if(nos[i]>=60 && nos[i]<=64)
{
hist[1]++;
}
else if(nos[i]>=65 && nos[i]<=69)
{
hist[2]++;
}
else if(nos[i]>=70 && nos[i]<=74)
{
hist[3]++;
}
else if(nos[i]>=75 && nos[i]<=79)
{
hist[4]++;
}
else if(nos[i]>=80 && nos[i]<=84)
{
hist[5]++;
}
else if(nos[i]>=85 && nos[i]<=89)
{
hist[6]++;
}
else if(nos[i]>=90 && nos[i]<=94)
{
hist[7]++;
}
else if(nos[i]>=95 && nos[i]<=99)
{
hist[8]++;
}
}
cout<<"Displaying the count of numbers in each interval:"<<endl;
int cnt=0;
for(int i=55;i<=99;i+=5)
{
cout<<i<<"-"<<i+4<<"|"<<hist[cnt]<<endl;
cnt++;
}
cout<<"Displaying the histogram :"<<endl;
cnt=0;
for(int i=55;i<=99;i+=5)
{
cout<<i<<"-"<<i+4<<"|";
for(int j=0;j<hist[cnt];j++)
{
cout<<"*";
}
cout<<endl;
cnt++;
}
}
#########
___________________________
The output can be seen in the attached image below.
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Answer:
Explanation:
The following code is written in Java. The if() function is actually called an if statement. The following code can be copied and pasted where you need as long as it is within the scope of the mark variable in order to call it and compare it to 10
if (mark > 10){
System.out.println("you have scored good");
} else {
System.out.println("you need to improve ");
}
