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 9 9 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?
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 9 9 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?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text: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 9 9 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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