In a study to compare two different methods of teaching reading, a class of 20 children was divided into two groups at random. Each group was taught reading using one method. After six months the two groups were given the same test. One pupil in the frst group was ill and missed the test. The scores are given below. Method 1 80 85 79 81 89 73 50 71 76 Method 2 79 62 75 68 62 73 76 81 73 61 (a) Calculate the extreme values and the quartiles for each group. (b) Hence draw box-and-whisker plots for the two groups using the same scale. (c) Comment on the differences between the two groups.
In a study to compare two different methods of teaching reading, a class of 20 children was divided into two groups at random. Each group was taught reading using one method. After six months the two groups were given the same test. One pupil in the frst group was ill and missed the test. The scores are given below. Method 1 80 85 79 81 89 73 50 71 76 Method 2 79 62 75 68 62 73 76 81 73 61 (a) Calculate the extreme values and the quartiles for each group. (b) Hence draw box-and-whisker plots for the two groups using the same scale. (c) Comment on the differences between the two groups.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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In a study to compare two different methods of teaching reading, a class of 20 children was divided into two groups at random. Each group was taught reading using one method. After six months the two groups were given the same test. One pupil in the frst group was ill and missed the test. The scores are given below. Method 1 80 85 79 81 89 73 50 71 76 Method 2 79 62 75 68 62 73 76 81 73 61 (a) Calculate the extreme values and the quartiles for each group. (b) Hence draw box-and-whisker plots for the two groups using the same scale. (c) Comment on the differences between the two groups.
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