Real Data

Table of Contents

Introduction v
PART A: Data Sets for All Classes

1.

Percentages: I
What Do People Look for in Prospective Partners? A Study of Personal Ads

1

2.

Percentages: II
Have Americans Lost Their Compassion for the Homeless?

4

3.

Proportions
Assaultive Behavior of Men and Women in Intimate Relationships

7

4.

Bar Graph for Nominal Data
Is Binge Eating Related to Dieting?

11

5.

Frequency Distribution (Ungrouped Scores)
Is a Stolen Kiss a Serious Form of Sexual Harassment?

14

6.

Frequency Distribution (Grouped Scores)
Basic Trust of Rape Survivors

18

7.

Cumulative Frequencies, Cumulative Percentages, and Percentile Ranks
Reasons People Give for Depression

22

8.

Frequency Polygon and Shapes of Distributions
Are Gamblers More Likely to Steal than Non-Gamblers?

26

9.

Mean, Median, and Shapes of Distributions
Average Number of Lifetime Sexual Partners of Male College Students

30

10.

Mean and Median
Students’ Part-Time Work, GPA, and Days Absent from School

33

11.

Mean, Median, and Mode
Drawing Happy Faces on Restaurant Checks: Does It Increase Tips?

36

12.

Mean and Standard Deviation for a Population
Sudden Cardiac Deaths on the Day of a Major Earthquake

40

13.

Mean and Standard Deviation (Population Estimate from a Sample)
Effects of Progressive and Sex-Object Images of Women in Advertisements

43

14.

Standard Scores
Negative Behaviors of Boys When Interacting with Their Fathers

46

15.

Scattergram
The Relationship Between Absences and GPA

49

16.

Pearson r: I
Correlates of Suicide Rates

53

17.

Pearson r: II
The Relationship Between Manic Tendencies and Eating Disorders

57

18.

Multiple Correlation
Obsessive-Compulsive Behavior and Perfectionism

60

19.

Linear Regression
Flexibility of Work Schedule as a Predictor of Parenting Ability

63

20.

Standard Error of the Mean and 68% Confidence Interval
Effects of Instructors’ Clothing on College Students’ Evaluations
of Instruction

66

21.

Standard Error of the Mean and 95% Confidence Interval
Self-Acceptance and Self-Disclosure of Bisexual Men to
Their Female Partners

69

22.

Standard Error of the Mean and 99% Confidence Interval
Are Gay Men More Attached to Their Mothers or Their Fathers?

72

23.

t Test from Descriptive Statistics for Independent Data: I
Comfort in Working with Persons with Disabilities

75

24.

t Test from Descriptive Statistics for Independent Data: II
Hostile Feelings and Emotional Immaturity of Women with
Histories of Incestuous Abuse

78

25.

t Test from Raw Scores for Independent Data
Future Time Orientation and Condom Use for AIDS Prevention

81

26.

t Test for Dependent Data
Are Multiple-Choice Test Items Easier than Open-Ended Items?

84

27.

One-Way Analysis of Variance: Two Means
Computer Experience and Computer Hassles

87

28.

One-Way Analysis of Variance: Three Means
College Students’ Seating Choices and Motivation to Achieve

91

29.

Significance of the Difference Between Variances
Attitudes of Teachers Toward Children with Disabilities

95

30.

Standard Error of a Percentage and 95% Confidence Interval
Risk for Pregnancy Among Adolescents Who Had Been
Sexually Abused

98

31.

One-Way Chi Square
Forms of Abuse Among Adolescent Females

102

32.

Chi Square Test for a 2 by 2 Table
Financial Concerns and Suicidal Thoughts of HIV+ Men

105

33.

Chi Square Test for a 2 by 4 Table
Physicians’ Willingness to Participate in Assisted Suicide and
Their Religious Affiliations

109

34.

Median Test
Favorite Colors and Depression

112

35.

Mann-Whitney U Test
Racial Differences in Seeking Medical Assistance

115

PART B: Larger Data Sets for Computer Users

36.

Comprehensive Analysis: I
Characteristics of Adolescent Male Gamblers

118

37.

Comprehensive Analysis: II
Care-Seeking for Breast Cancer Symptoms

123

38.

Comprehensive Analysis: III
Attitudes Toward Math, Math Achievement, and Expected Grades

130

additional information