Q1: As a project for his statistics class in Spring 2001, Ahmed was supposed to take a random sample of 30 cars in the student parking lot and determine the make and year of each car. (a) Ahmed used a random-number table to get a random sample of 30 cars in the parking lot. Suppose the lot is full and there are 950 parking places. Describe how he sampled the 30 cars. (b) After getting his random sample, Ahmed found that eight cars were Chaverolets, seven were Fords, five were Toyotas, three were BMWs, three were Hondas, three were Oldsmobiles, and one was a Cadillac. Make a table for these data, and draw a bar graph. Draw a circle graph showing the percentage of the total number of cars samples (c) The model years for each of the 30 cars are shown here: 96 99 95 97 86 92 96 97 89 92 83 92 99 87 89 90 90 97 93 88 93 95 84 95 76 96 88 99 95 93 Make a frequency table, histogram, and a frequency polygon for these data (use five classes). Describe the shape of the histogram.
Q1: As a project for his statistics class in Spring 2001, Ahmed was supposed to take a random sample of 30 cars in the student parking lot and determine the make and year of each car. (a) Ahmed used a random-number table to get a random sample of 30 cars in the parking lot. Suppose the lot is full and there are 950 parking places. Describe how he sampled the 30 cars. (b) After getting his random sample, Ahmed found that eight cars were Chaverolets, seven were Fords, five were Toyotas, three were BMWs, three were Hondas, three were Oldsmobiles, and one was a Cadillac. Make a table for these data, and draw a bar graph. Draw a circle graph showing the percentage of the total number of cars samples (c) The model years for each of the 30 cars are shown here: 96 99 95 97 86 92 96 97 89 92 83 92 99 87 89 90 90 97 93 88 93 95 84 95 76 96 88 99 95 93 Make a frequency table, histogram, and a frequency polygon for these data (use five classes). Describe the shape of the histogram.
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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Concept explainers
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Question
Q1: As a project for his statistics class in Spring 2001, Ahmed was supposed to take a
random sample of 30 cars in the student parking lot and determine the make and year of
each car.
(a) Ahmed used a random-number table to get a random sample of 30 cars in the parking
lot. Suppose the lot is full and there are 950 parking places. Describe how he sampled
the 30 cars.
(b) After getting his random sample, Ahmed found that eight cars were Chaverolets,
seven were Fords, five were Toyotas, three were BMWs, three were Hondas, three
were Oldsmobiles, and one was a Cadillac. Make a table for these data, and draw a
bar graph. Draw a circle graph showing the percentage of the total number of cars
samples
(c) The model years for each of the 30 cars are shown here:
96 99 95 97 86 92 96 97 89 92
83 92 99 87 89 90 90 97 93 88
93 95 84 95 76 96 88 99 95 93
Make a frequency table, histogram, and a frequency polygon for these data (use five
classes). Describe the shape of the histogram.
(d) Consider the data types: nominal, ordinal, interval, or ratio. In part (b), what type of
data do we have? Could you make a histogram for these data? In part (c), what type
of data do we have? Could you organize these data in a circle graph?
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