Solutions for Ten Lessons in Introductory Sociology
Problem 1SE:
Predicting Land Value Both scatterplots concern the assessed value of land (with homes on the land),...Problem 2SE:
Predicting Total Value of Property Both scatterplots concern the total assessed value of properties...Problem 3SE:
Car Value and Age of Student The scatterplot shows the age of students and the value of their cars...Problem 4SE:
Shoe Size and GPA The figure shows a scatterplot of shoe size and GPA for some college students....Problem 5SE:
Weight Loss (Example 1) The scatterplot shows the actual weight and desired weight change of some...Problem 6SE:
Comparing Salaries The scatterplot shows the salary and year of first employment for some professors...Problem 7SE:
Sisters and Brothers The scatterplot shows the numbers of brothers and sisters for a large number of...Problem 8SE:
BAs and Median Income The scatterplot shows data from the 50 states taken from the U.S. Census-the...Problem 9SE:
Work and TV The scatterplot shows the number of work hours and the number of TV hours per week for...Problem 10SE:
Work and Sleep The scatterplot shows the number of hours of work per week and the number of hours of...Problem 11SE:
Age and Sleep The scatterplot shows the age and number of hours of sleep “last night” for some...Problem 12SE:
Height and Weight for Women The figure shows a scatterplot of the heights and weights of some women...Problem 13SE:
College Tuition and ACT a. The first scatterplot shows the college tuition and percentage acceptance...Problem 14SE:
Ages of Women Who Give Birth The figure shows a scatterplot of birthrate (live births per 1000...Problem 15SE:
Do Older Students Have Higher GPAs? On the basis of the scatterplot, do you think that the...Problem 16SE:
Handspans Refer to the figure. a. Would it make sense to find the correlation with this data set?...Problem 17SE:
Matching Pick the letter of the graph that goes with each numerical value listed below for the...Problem 18SE:
Matching Pick the letter of the graph that goes with each numerical value listed below for the...Problem 19SE:
Matching Match each of the following correlations with the corresponding graph. 0.87 0.47 0.67 (A)...Problem 20SE:
Matching Match each of the following correlations with the corresponding graph. 0.51 0.98 0.18 (A)...Problem 21SE:
Trash (Example 2) The table shows the number of people living in a house and the weight of trash (in...Problem 22SE:
Cost of Flights The table for part a shows approximate distances between selected cities and the...Problem 23SE:
Work Hour and TV Hours In Exercise 4.9 there was a graph of the relationship between hours of TV and...Problem 24SE:
House Price The correlation between house price (in dollars) and area of the house (in square feet)...Problem 25SE:
Rate My Professor Seth Wagerman, a former professor at California Lutheran University, went to the...Problem 26SE:
Cousins Five people were asked how many female first cousins they had and how many male first...Problem 27SE:
+ Video Games and BMI The table gives some hypothetical data for number of hours of video games...Problem 28SE:
See-Saw The table gives data on the heights (above ground) of the left and right seats of see-saw...Problem 29SE:
Salaries of College Graduates (Example 3) The scatterplot shows the median starting salaries and the...Problem 30SE:
Mother and Daughter Heights The graph shows the heights of mothers and daughters. (Source:...Problem 31SE:
Are Men Paid More Than Women? The scatterplot shows the median annual pay for college-educated men...Problem 32SE:
Home Prices and Areas of Four Bedroom Homes a. Using the graph, estimate the predicted price for a...Problem 33SE:
Height and Arm Span for Women (Example 4) TI-84 output from a linear model for predicting arm span...Problem 34SE:
Hand and Foot Length for Women The computer output shown below is for predicting foot length from...Problem 35SE:
Height and Arm Span for Men (Example 5) Measurements were made for a sample of adult men. A...Problem 36SE:
Hand Length and Foot Length for Men Measurements were made for a sample of adult men. Assume that...Problem 37SE:
Comparing Correlation for Arm Span and Height The correlation between height and armspan in a sample...Problem 38SE:
Age and Weight for Men and Women The scatterplot shows a solid blue line for predicting weight from...Problem 39SE:
Social Security Number and Age The figure shows a scatterplot of the last two digits of some...Problem 40SE:
Seesaw The figure shows a scatterplot of the height of the left seat of a seesaw and the height of...Problem 41SE:
Choosing the Predictor and Response (Example 6) Indicate which variable you think should be the...Problem 42SE:
Choosing the Predictor and Response Indicate which variable you think should be the predictor x and...Problem 43SE:
Percentage of Smoke-Free Homes and Percentage of High School Students Who Smoke (Example 7) The...Problem 44SE:
Effect of Adult Smoking on High School Student Smoking The following figure shows a scatterplot with...Problem 45SE:
Driver’s Deaths and Ages The figure shows a graph of the death rate in automobile accidents and the...Problem 46SE:
Do Women Tend to Live Longer Than Men? The figure shows mean life expectancy versus age for males...Problem 47SE:
How Is the Time of a Flight Related to the Distance of the Flight? The following table gives the...Problem 48SE:
English in California Schools This problem concerns the vote of the Ventura County cities on...Problem 49SE:
Do States with Higher Populations Have More Millionaires? The following table gives the number of...Problem 50SE:
Semesters and Units The table shows the self-reported number of semesters completed and the number...Problem 51SE:
Pitchers The table shows the number of wins and the number of strikeouts (SO) for 40 baseball...Problem 52SE:
Text Messages The following table shows the number of text messages sent and received by some people...Problem 53SE:
Answer the question using complete sentence. a. What is an influential point? b. It has been noted...Problem 54SE:
Answer the question, using complete sentences. a. What is extrapolation and why is it a bad idea in...Problem 55SE:
If there is a positive correlation between number of years studying math and shoe size (for...Problem 56SE:
Suppose that the growth rate of children looks like a straight line if the height of a child is...Problem 57SE:
Coefficient of Determination If the correlation between height and weight of a large group of people...Problem 58SE:
Coefficient of Determination Does a correlation of 0.70 or +0.50 give a larger coefficient of...Problem 59SE:
Investing Some investors use a technique called the “Dogs of the Dow” to invest. They pick several...Problem 60SE:
Blood Pressure Suppose a doctor telephones those patients who are in the highest 10#37; with regard...Problem 61SE:
Salary and Year of Employment (Example 8) The equation for the regression line relating the salary...Problem 62SE:
MPG: Highway and City The following figure shows the relationship between the number of miles per...Problem 63SE:
Cost of Turkeys The table shows the weights and prices of some turkeys at different supermarkets. a....Problem 64SE:
Iraq Casualties and Population of Hometowns The figures show the number of Iraq casualties through...Problem 65SE:
Teachers’ Pay and Costs of Education (Example 9) The figure shows a scatterplot with a regression...Problem 66SE:
Teachers’ Pay the figure shows a scatterplot with a regression line for the average teacher’s pay...Problem 67SE:
Does Having a Job Affect Students’ Grades? (Example 10) Grades on a political science test and the...Problem 68SE:
Weight of Trash and Household Size Data were collected that included information on the weight of...Problem 69SE:
Age and Text Messages The scatterplot shows the relationship between age and number of text messages...Problem 70SE:
Life Expectancy and TVs The scatterplot shows the average life expectancy for some countries and the...Problem 71SE:
Education of Fathers and Mothers The data shown in the table are the numbers of years of formal...Problem 72SE:
Heights of Fathers and Sons The table shows some data from a sample of heights of fathers and their...Problem 73SE:
Test Scores Assume that in a political science class, the teacher gives a midterm exam and a final...Problem 74SE:
Test Scores Assume that in a sociology class, the teacher gives a midterm exam and a final exam....Problem 75CRE:
Heights and Weights of People The following table shows the heights and weights of some people. The...Problem 76CRE:
Heights and Weights of Men The table shows the heights (in inches) and weights (in pounds) of 14...Problem 77CRE:
Homes The table shows the asking price (in thousands of dollars) and area (square feet) of 30 homes...Problem 78CRE:
Alcohol and Calories in Beer At the text’s website there is a data set that provides the number of...Problem 79CRE:
Shoe Size and Height The scatterplot shows the shoe size and height for some men (M) and women (F)....Problem 80CRE:
Age and Sleep The following scatterplot shows the age in years and the number of hours of sleep for...Problem 81CRE:
Age and Weight The following scatterplot shows the age and weight for some women. Some of them...Problem 82CRE:
Heights and Test Scores a. The following figure shows hypothetical data for a group of children. By...Problem 84CRE:
Age and Happiness Happiness ratings were from I (least happy) to 100 (most happy). Data are at the...Problem 85CRE:
Tree Heights Loggers gathered information about some trees. The diameter is in inches, the height is...Problem 87CRE:
Film Budgets and Grosses Movie studios exert much effort trying to predict how much money their...Problem 88CRE:
Gas Mileage of Cars The table gives the number of miles per gallon in the city and on the highway...Problem 89CRE:
Tall Buildings The following scatterplot shows information about the world’s tallest 169 buildings....Problem 90CRE:
Bar-Passing Rate To become a lawyer, you must pass the bar exam in your state, and law schools often...Problem 91CRE:
For 4.91 through 4.94 show your points in a rough scatterplot and give the coordinates of the...Problem 92CRE:
For 4.91 through 4.94 show your points in a rough scatterplot and give the coordinates of the...Problem 93CRE:
For 4.91 through 4.94 show your points in a rough scatterplot and give the coordinates of the...Problem 94CRE:
For 4.91 through 4.94 show your points in a rough scatterplot and give the coordinates of the...Problem 95CRE:
The following figure shows a scatterplot of the educational level of twins. Describe the...Problem 96CRE:
Wages and Education The figure shows a scatterplot of the wages and educational level of some...Problem 97CRE:
Do Students Taking More Units Study More Hours? The following figure shows the number of units that...Problem 98CRE:
Hours of Exercise and Hours of Homework The following scatterplot shows the number of hours of...Problem 99CRE:
Children’s Ages and Heights The following figure shows information about the ages and heights of...Problem 100CRE:
Blackjack Tips The following figure shows the amount of money won by people playing blackjack and...Browse All Chapters of This Textbook
Chapter 1 - Introduction To DataChapter 2 - Picturing Variation With GraphsChapter 3 - Numerical Summaries Of Center And VariationChapter 4 - Regression Analysis: Exploring Associations Between VariablesChapter 5 - Modeling Variation With ProbabilityChapter 6 - Modeling Random Events: The Normal And Binomial ModelsChapter 7 - Survey Sampling And InferenceChapter 8 - Hypothesis Testing For Population ProportionsChapter 9 - Inferring Population MeansChapter 10 - Associations Between Categorical Variables
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