1. As part of an assessment for navigation, a professor has his students take a written test. He teaches five sections of the class. The scores 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.

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: