INTRODUCTORY STATISTICS (LOOSELEAF)
3rd Edition
ISBN: 9780135163146
Author: Gould
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 52SE
Cell Phone Use Refer to the accompanying bar chart, which shows the time spent on a typical day talking on the cell phone for some men and women. Each person was asked to choose the one of four intervals that best fit the amount of time he or she spent on the phone (for example, “0 to 4 hours” or “12 or more hours”).
a. Identify the two variables. Then state whether they are categorical or numerical and explain.
b. Is the graph a bar chart or a histogram? Which would be the better choice for these data?
c. If you had the actual number of hours for each person, rather than just an interval, what type of graph should you use to display the distribution of the actual numbers of hours?
d. Compare the
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Chapter 2 Solutions
INTRODUCTORY STATISTICS (LOOSELEAF)
Ch. 2 - Pulse Rates The dotplot shown is for resting pulse...Ch. 2 - Glucose A dotplot of the glucose readings from 132...Ch. 2 - Pulse Rates The histogram shown is for pulse rates...Ch. 2 - Fast Food Calories The histogram shown is for...Ch. 2 - Pulse Rates (Example 1) The resting pulse rates...Ch. 2 - Post Office Customers A post office branch...Ch. 2 - Cereals The following dotplots show the number of...Ch. 2 - Coins’ Weights The weights of coins (in grams)...Ch. 2 - Sleep (Example 2) An instructor asks a class of...Ch. 2 - Parking Tickets A group of 80 drivers in a large...
Ch. 2 - Arm spans (Example 3) According to the ancient...Ch. 2 - Tuition The distribution of in-state annual...Ch. 2 - Pulse Rates (Example 4) From the histogram in...Ch. 2 - Fast Food Calories From the histogram shown in...Ch. 2 - BMI (Example 5) The histograms show the Body Mass...Ch. 2 - Triglycerides The histograms show triglyceride...Ch. 2 - Education (Example 6) In 2012, the General Social...Ch. 2 - Siblings The histogram shows the distribution of...Ch. 2 - Monthly Car Costs The histograms show the monthly...Ch. 2 - Car MPG The histograms show the miles per gallon...Ch. 2 - Matching Histograms Match each of the three...Ch. 2 - Matching Match each histogram given with the...Ch. 2 - Matching Match each description with the correct...Ch. 2 - Matching Match each description with the correct...Ch. 2 - Comparing Weights of Olympic Hockey and Soccer...Ch. 2 - Rents in San Francisco The data show monthly rents...Ch. 2 - Textbook Prices The table shows prices of 50...Ch. 2 - SAT scores The following table shows a random...Ch. 2 - Animal Longevity The following table in Exercise...Ch. 2 - Animal Gestation Periods The accompanying table...Ch. 2 - Tax Rate A StatCrunch survey asked people what...Ch. 2 - Pets A StatCrunch survey asked people whether they...Ch. 2 - Law School Tuition Data are shown for the cost of...Ch. 2 - Text Messages Recently, 115 users of StatCrunch...Ch. 2 - Beer, Calories Data are available on the number of...Ch. 2 - Beer, Alcohol Data are available on the percent...Ch. 2 - Changing Multiple-Choice Answers When Told Not to...Ch. 2 - Preventable Deaths According to the World Health...Ch. 2 - Ice Cream Preference (Example 8) Suppose a group...Ch. 2 - Prob. 40SECh. 2 - Gun Availability Pew Research conducted a survey...Ch. 2 - Entry-Level Education The Bureau of Labor...Ch. 2 - Obesity Among Adults (Example 9) Data on obesity...Ch. 2 - Fitness Among Adults Data on the percentage of...Ch. 2 - Internet Browsers The following table gives the...Ch. 2 - Commercial Radio The following table gives the...Ch. 2 - Garage The accompanying graph shows the...Ch. 2 - Body Image A student has gathered data on...Ch. 2 - Pie Chart of Sleep Hours The pie chart reports the...Ch. 2 - Age and Gender The following graph shows the ages...Ch. 2 - Musicians Survey: StatCrunch Graph The...Ch. 2 - Cell Phone Use Refer to the accompanying bar...Ch. 2 - Sleep The following table shows the first few...Ch. 2 - Majors The following table shows the first few...Ch. 2 - Hormone Replacement Therapy The use of the drug...Ch. 2 - E-Music The bar graph shows information reported...Ch. 2 - Hormone Replacement Therapy Again The following...Ch. 2 - Holding Your Breath A group of students held their...Ch. 2 - Global Temperatures The histograms show the...Ch. 2 - Employment after Law School Accredited law schools...Ch. 2 - Opinions on Nuclear Energy People were asked...Ch. 2 - Stem Cell Research People were asked whether they...Ch. 2 - Create a dotplot that has at least 10 observations...Ch. 2 - Create a dotplot that has at least 10 observations...Ch. 2 - Traffic Cameras College students Jeannette Mujica,...Ch. 2 - Ideal Weight Thirty-nine students (26 women and 13...Ch. 2 - MPH The graphs show the distribution of...Ch. 2 - Shoe Sizes The graph shows shoe sizes for men and...Ch. 2 - CEO Salaries Predict the shape of the distribution...Ch. 2 - Cigarettes A physician asks all of his patients to...Ch. 2 - Changing Multiple-Choice Answers When Told to Do...Ch. 2 - ER Visits for Injuries The graph shows the rates...Ch. 2 - Social Media Use The Pew Research Center documents...Ch. 2 - Social Media Use The Pew Research Center gathered...Ch. 2 - Choosing a Graph For each situation, describe the...Ch. 2 - Choosing a Graph For each situation, describe the...
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