Stats Modeling the World, 4th Edition

Published by Pearson
ISBN 10: 0133151549
ISBN 13: 978-0-13315-154-1

Chapter 2 - Displaying and Describing Categorical Data - Exercises - Page 39: 30


a) 41% foreign cars. b) 47.3% owned by American students. c) 54.8% of students owned American cars. d) Marginal distribution of origin is: American 59.0%, European 12.5%, Asian 28.4%. e) The conditional distribution of origin by driver classification is: American students, 54.8%; European students 16.9, Asian students 28.2% and staff distribution is American 64.2%, European students, 7.3%; Asian students, 28.6%. f) There were 359 total cars, and they were categorized as follows: 59% American, 12.5% European, and 28.4% Asian. Thus, the percentage of cars owned is not independent.

Work Step by Step

In order to calculate a percentage, first divide the number in the given category by the total number. Then, express this fraction in decimal form. Finally, multiply by 100% to express this number as a percentage.
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