Write a computer program that determines how many grades are between 0 and 19

A list of 30 exam scores is: 31, 70, 92, 5, 47, 88, 81, 73, 51, 76, 80, 90, 55, 23, 43, 98, 36,87, 22, 61, 19, 69, 26, 82, 89, 99, 71, 59, 49, 64 Write a computer program that determines how many grades are between 0 and 19, between 20 and 39, between 40 and 59, between 60 and 79, and between 80 and 100. The results are displayed in the following form: Grades between 0 and 19 2 students Grades between 20 and 39 4 students Grades between 40 and 59 6 students and so on. (Hint: use the command fprintf to display the results)

[Azzi Abdelmalek]

This looks like a homework. Show us your code, and the problems you encountered.

[JJJ NNN]

this is my code but i dont know what to do after

x=[ 31 70 92 5 47 88 81 73 51 76 80 90 55 23 43 98 36 87 22 61 19 69 26 82 89 99 71 59 49 64];
y1=(x>0 & x<=19);
c1=x(y1)
d1=length(c1)
disp(d1)

[Joshua Magno]

I=[31,70,92,5,47,88,81,73,51,76,80,90,55,23,43,98,36,87,22,61,19,69,26,82,89,99,71,59,49,64];

a=sum(I>=0 & I<=19);

fprintf('The grades between 0 and 19 is %1.0f students.\n',a)

b=sum(I>=20 & I<=39);

fprintf('The grades between 20 and 39 is %1.0f students.\n',b)

c=sum(I>=40 & I<=59);

fprintf('The grades between 40 and 59 is %1.0f students.\n',c)

d=sum(I>=60 & I<=79);

fprintf('The grades between 60 and 79 is %1.0f students.\n',d)

e=sum(I>=80 & I<=100);

fprintf('The grades between 80 and 100 is %2.0f students.\n',e)

Answer 1

[Jos (10584)]

help numel
help for
help if

or

help histc

Answer 2

[Image Analyst]

Try histogram() or histcounts():

edge = [0, 19.5, 39.5,,,,,, etc.
counts = histcounts(.........

Two lines of code. One or two more if you want to use fprintf() to print results to the command window

fprintf('%d\n', cou..................