Write a junction called classAverage that takes in an array of numbers and, afte

Question

Write a junction called classAverage that takes in an array of numbers and, after normalizing the grades in such a way that the highest corresponds to 100, returns the letter grade of the class average. This curve is the same method used to generate in Chapter Problem 2. The grade ranges are as follows: average>90 => A 80 le average B 70 le average C 60 le average D average F For example: classAverage ( [70 87 95 80 80 78 85 90 65 99 ... 89 100] ) should return B classAverage ( [50 90 61 82 75 92 81 76 87 41 ... 31 98] ) should return C classAverage ( [10 10 11 32 53 12 34 74 31 30 ... 26 21] ) should return y

Explanation / Answer

grades =

    70    80    75    85    90    95   100

function averagegrade= classAverage(grades)

max1= max(grades);

grades2= (grades/max1)*100;

classAvg= mean(grades2);

if classAvg >= 90 && classAvg<100

       averagegrade= 'A';

elseif classAvg >= 80 && classAvg<90

         averagegrade= 'B';

elseif classAvg >= 70 && classAvg<80

          averagegrade= 'C';

elseif classAvg >= 60 && classAvg<70

           averagegrade= 'D';

elseif classAvg >= 0 && classAvg<60

           averagegrade='F';

end

end

Output:

>> averagegrade= classAverage(grades)

averagegrade =

B

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