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

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

anonymous · Answer

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?
Part 2: Make a box plot of the data for Classes A and B. Identify the median, first and third quartiles, minimum and maximum data points.
Part 3: Explain how the values for Classes A and B vary about the mean and median. What information does this give Mrs. Smith?

abb0t · Answer

I would use excel to find the mean and standard deviation for this. too many numbers

abb0t · Answer

mean is the average
median is themiddle number in a list of them (they must be in numerical order)
standard deviation is just a measure of how spread out your data is.