Chapter 1: Q 1.4. (page 31)
The Fathom dot plot displays data on the number of siblings reported by each student in a statistics class.
Identify any potential outliers.
Short Answer
Potential outliers are and
Chapter 1: Q 1.4. (page 31)
The Fathom dot plot displays data on the number of siblings reported by each student in a statistics class.
Identify any potential outliers.
Potential outliers are and
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Get started for freeAt the Census Bureau Web site, you can view detailed data collected by the American Community Survey. The table below includes data for 10 people chosen at random from the more than one million people in households contacted by the survey. “School” gives the highest level of education completed.
This data set contains
(a) 7 variables, 2 of which are categorical.
(b) 7 variables, 1 of which is categorical.
(c) 6 variables, 2 of which are categorical.
(d) 6 variables, 1 of which is categorical.
(e) None of these.
Cool car colors The most popular colors for cars and light trucks change over time. Silver passed green in to become the most popular color worldwide, then gave way to shades of white in . Here is the distribution of colors for vehicles sold in North America in
(a) What percent of vehicles had colors other than those listed?
(b) Display these data in a bar graph. Be sure to label your axes and title your graph.
(c) Would it be appropriate to make a pie chart of these data? Explain.
Popular colours—here and there Favorite vehicle colours may differ among countries. The side-by-sidebar graph shows data on the most popular colours of cars in 2008 for the United States and Europe. Write a few sentences comparing the two distributions.
How can we help wood surfaces resist weathering, especially when restoring historic wooden buildings? In a study of this question, researchers prepared wooden panels and then exposed them to the weather. Here are some of the variables recorded: type of wood (yellow poplar, pine, cedar); type of water repellent (solvent-based, water-based); paint thickness (millimeters); paint color (white, gray, light blue); weathering time (months).
Identify each variable as categorical or quantitative.
A survey was designed to study how business operations vary according to their size. Companies were classified as small, medium, or large. Questionnaires were sent to randomly selected businesses of each size. Since not all questionnaires in a survey of this type are returned, researchers decided to investigate the relationship between the response rate and the size of the business. The data are given in the following two-way table.
What percent of all small companies receiving questionnaires responded?
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