Question

Write a MATLAB program in a script file that calculate the average, standard

Answer 1

Answer:

Code in MATLab is given as  below:

Explanation:

grade = input('Enter the grades as elements of a vector ');

x1 = length(grade);

fprintf('There are %5.2f grades\n',x1);

x2 = mean(grade);

fprintf('The average grade is %5.2f \n',x2);

x3=std(grade);

fprintf('The standard deviation is %5.2f \n',x3);

x4 = median(grade);

fprintf('The median grade is %5.2f \n',x4);

Answer 2

Answer:

Complete Matlab code along with explanation and output results are given below.

Matlab Code:

clear all

close all

clc

input_grades = input('Enter the grades as elements of a vector ');  

len = length(input_grades);

fprintf('There are %.2f grades\n', len);

Mean = mean(input_grades);

fprintf('The Average grade is: %.3f\n', Mean);

STD=std(input_grades);

fprintf('The Standard Deviation is: %.3f\n', STD);

Median = median(input_grades);

fprintf('The Median grade is: %.2f\n', Median);

Output:

Enter the grades as elements of a vector [92,74,53,61,100,42,80,66,71,78,91,85,79,68]

There are 14.00 grades

The Average grade is: 74.286

The Standard Deviation is: 15.760

The Median grade is: 76.00

Explanation:

The user provides input vector of grades

Using the built-in functions of Matlab the length, mean, standard deviation and median of the grades are calculated and printed.

%.2f is a text formatting command that means show up to 2 decimal digits and convert the floating point values to text.

The input vector provided in the question is tested and the program is working correctly.