Mrs. Smith has taught three, Algebra I classes this year. She just finished grading her final chapter test for the second semester. The raw data is below:
Class A Class B Class C
80 72 100
85 90 90
87 85 94
92 84 100
86 91 75
90 78 30
94 94 94
100 86 72
75 82 85
45 78 87
85 86 42
38 78 100
72 95 90
94 90 94
62 88 60
________________________________________
Question 1
Analyze the data for Class A and Class B.
• Part 1: What is the mean and standard deviation for Classes A and B?

Question

Mrs. Smith has taught three, Algebra I classes this year. She just finished grading her final chapter test for the second semester. The raw data is below:
Class A	Class B	Class C
80	72	100
85	90	90
87	85	94
92	84	100
86	91	75
90	78	30
94	94	94
100	86	72
75	82	85
45	78	87
85	86	42
38	78	100
72	95	90
94	90	94
62	88	60
________________________________________
Question 1
Analyze the data for Class A and Class B.
•	Part 1: What is the mean and standard deviation for Classes A and B?

anonymous · Answer

♫singing something♫

undeadknight26 · Answer

I know how to find the mean just forgot how to find standard deviation.

anonymous · Answer

This helped me when I was learning this: http://www.mathsisfun.com/data/standard-deviation.html

anonymous · Answer

@undeadknight26  do you remember the answer?

anonymous · Answer

so what was the answer for this ?