Fall2015_letter_grades={\'A+\',\'C+\',\'C\',\'B+\',\'B+\',\'D+\',\'B\',\'C\',\'E
ID: 3121687 • Letter: F
Question
Fall2015_letter_grades={'A+','C+','C','B+','B+','D+','B','C','E','D+','D' 'A','C','D+','D+','B+','A','D','B+','D+','C+','F','C','B+','D','D+','C+','A+','B','D+','E','A','D+','B+','B','C+','B+','B','C+','B','F','A','C','B','B','C+','B' 'C+','F','D','B','B','D','A''C+'}
Fall2016_letter_grades={'B','A','A','C','D+','D+','C+','C','A','A+','B+','D+','B','A','B','C','A+','B','B+','A','D+','C+','C','C+','B+','B','B','C','E','B','C','B','D','B','A','B','A','B','C','B+','C+','C+','B','B+','D+','B','D+','C+','B','A','A','D+','C+','B+','C+','D+'}
Summer2016_letter_grades={'C+','B+','A','B+','B','B','B+','F','A+','B+','B+','C+','C+','D+','D+','B+','B', 'D+','A','D','D+','C','A','B','C','D+','A','A','D','B','C','C+','A+','B','C+','B+','B','C+', 'D+','A+','C','C','D+','B','B+','A','A','B','F','C+','C','C+','C+','A','C','D','B+'}
Winter2016_letter_grades={'A','F','C','D+','D+','B+','C','D+','B+','B','D','B','B','A+','B','A+','D','E', 'C+','A','A','A','C+','D','C+','D','A','B','C','C','C','A','B','D+','A','E','C','F','D+','A','A','C+','D', 'C+','D+','B','C+','D','A','C','C+','B+'}
-Find a curve/math function that can best fitt the grade distribution for each term? Plot the curves/functions for all terms and illustrate in one figure.
-Report the pass rate? Pass rate is D and above. E and F are fails.
-Write a menu driven program with four options (each term) to illustrate: -the grade distribution by term -the pass rate by term
Explanation / Answer
We have Letter grades for 4 terms : Fall 2015/Fall 2016/Summer 2016/Winter 2016
Let us Use the following Coding System :
A+ = 10
A= 9
B+ =8
B= 7
C+ = 6
C =5
D+ = 4
D =3
E =2
F=1
We see that numerical scores coresponding to 2 and 1 are both Fails.
We can see that the function that best represents the grade distribution is the normal distribution.
The pass rates are calculated as follows = (no. of Passes/ total no. of scores) * 100 %
The different pass rates for different terms are :
THIS CAN BE EASILY HANDLED IN EITHER R OR EXCEL OR EVEN C++ !!
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