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Taya2010 [7]
3 years ago
15

You are to create a program using Python that asks the user for a nonnegative number, then computes the mean and variance using

the above given online update formulas which should be displayed on the console screen. The program should end when a user enters a negative number.
Computers and Technology
1 answer:
Alik [6]3 years ago
7 0

Answer:

# In the new version of python is available the functions mean() an variance()

# In the module of statistics

i = 0 #Var to input the elements

l = [] #Var to store the elements on a list

while(i>0):

    print("In put a positive number to add in the list or negative to exit ")

    i = input()

    l.append(i)

    print("The mean of the all elements is: " + mean(l) )

    print("The variance of the all elements is: " + variance(i) )

Explanation:

At present, you can use in the <em>news python's verison</em> e.g. (python 3.7) the <em>statistics module</em> and use functions like <em>mean(), variance(), stdev()</em> and many others.

In the first step you create two variables, i to recieve the inputs of a loop and l to store all the elements recieved in the<em> i</em> variable. after that you pass as an argument the list that you stored before and get the <em>mean()</em> and <em>variance()</em> of the all elements in the list.

I hope it's help you.

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Can you answer this question?
patriot [66]

Answer:

To do this you'll need to use malloc to assign memory to the pointers used.  You'll also need to use free to unassign that memory at the end of the program using the free.  Both of these are in stdlib.h.

#include <stdlib.h>

#include <stdio.h>

#define SIZE_X 3

#define SIZE_Y 4

int main(void){

       int **matrix, i, j;

       // allocate the memory

       matrix = (int**)malloc(SIZE_X * sizeof(int*));

       for(i = 0; i < SIZE_X; i++){

               matrix[i] = (int *)malloc(SIZE_Y * sizeof(int));

       }

       // assign the values

       for(i = 0; i < SIZE_X; i++){

               for(j = 0; j < SIZE_Y; j++){

                       matrix[i][j] = SIZE_Y * i + j + 1;

               }

       }

       // print it out

       for(i = 0; i < SIZE_X; i++){

               for(j = 0; j < SIZE_X; j++){

                       printf("%d, %d:  %d\n", i, j, matrix[i][j]);

               }

       }

       // free the memory

       for(i = 0; i < SIZE_X; i++){

               free(matrix[i]);

       }

       free(matrix);

       return 0;

}

3 0
3 years ago
Write a program that allows the user to continuously input the value n until a negative number is entered
Paul [167]

Answer:

Written in C++

Explanation:

#include <iostream>

using namespace std;

int main()

{

int n;

while(true)

{

cin>>n;

if(n>=0)

continue;

break;

}

return 0;

}

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ElenaW [278]

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It functions by making the interfaces visible to the user that specifically fascinates them and keeping other smaller interfaces.Interfaces are made by splitting process and making the small interfaces from them.

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