Standard Deviation and mean of Class Grades
F-stat calculation for upholstery business
July 9, 2019Variance and standard deviation
July 9, 2019For F2006 the MAT540
Number of Students earning each letter grade was
Grades in Last Terms Number
A 117
B 140
C 101
F 57
If this term is representative of each terms performance what is the probabilityof a student receiving each grade?
Calculate the meanand standard deviation
if A=4, etc.
The total number of students = 117 + 140 + 101 +57 = 415
Then Prob(A) = 117 / 415 = 28.19%
Prob(B) = …
The calculations to find the standard deviation and the mean of class grades is given in the solution.
