Chapter 1: Q 61. (page 47)
Birth months Imagine asking a random sample of students from your school about their birth months. Draw a plausible graph of the distribution of birth months. (Hint: Should you use a bar graph or a histogram?)
Chapter 1: Q 61. (page 47)
Birth months Imagine asking a random sample of students from your school about their birth months. Draw a plausible graph of the distribution of birth months. (Hint: Should you use a bar graph or a histogram?)
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Get started for freeDeaths 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?
Smoking by students and parents Here is data from a survey conducted at eight high schools on smoking among students and their parents:
(a)How many students are described in the two-way table? What per cent of these students smoke?
(b) Give the marginal distribution of parents’ smoking behaviour, both in counts and in percentages.
Here, once again, is the stem plot of travel times to work for randomly selected New Yorkers. Earlier, we found that the median was minutes.
Would the mean or the median be a more appropriate summary of the center of this distribution of drive times? Justify your answer.
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.
At 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.
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