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Chapter 1: Q 2.3. (page 61)
The roster of the Dallas Cowboys professional football team included 10 offensive linemen. Their weights (in pounds) were
Determine whether there are any outliers using therule.
The higher outliner is
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About million first-year students enroll in colleges and universities each year. What do they plan to study? The pie chart displays data on the percent of first-year students who plan to major in several discipline areas. About what percent of first-year students plan to major in business? In social science?
Here, once again, is the stem plot of travel times to work for randomly selected New Yorkers. Earlier, we found that the median was
Use your calculator to find the mean travel time. Was your answer to Question correct?
Marginal distributions aren’t the whole story Here are the row and column totals for a two-way table with two rows and two columns:
Find two different sets of counts and for the body of the table that gives these same totals. This shows that the relationship between two variables cannot be obtained from the two individual distributions of the variables.
Deaths among young people Among persons aged to years in the United States, the leading causes of death and number of deaths in a recent year were
as follows: accidents, ; homicide, ; suicide, ; cancer, ; heart disease, ; congenital defects,
(a) Make a bar graph to display these data.
(b) To make a pie chart, you need one additional piece of information. What is it?
If a distribution is skewed to the right with no outliers,
(a) mean median. (d) mean > median.
(b) mean median. (e) We can’t tell without examining the data.
(c) mean median.
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