As part of an assessment for navigation, a professor has his students take a written test. He teaches five different classes (1 thru 5).

  1. As part of an assessment for navigation, a professor has his students take a written test. He teaches five different classes (1 thru 5). The scores, (in percentages) from the students in each section appear below. Compute the mean, variance, and standard deviations for each class shown below in the table. Assume these students are the entire population. Don’t forget units.

 

Class Student Scores
A B C D E F G H I
1 94 84 78 54 82 94 75 83 82
2 89 89 84 74 75 76 77 71 90
3 96 92 91 82 88 88 83 74 67
4 85 77 99 92 91 91 91 72 80
5 89 100 88 73 66 62 95 91 90

 

Class 1:

 

Class 2:

 

Class 3: 

 

Class 4: 

 

Class 5: