Data Analysis for the Social Sciences (eBook)

Part I: The Foundations
Chapter 1: Overview
The general framework
Recognizing randomness
Lies, damn lies, and statistics
Testing for randomness
Research design and key concepts
Paradoxes
Chapter 2: Descriptive Statistics
Numerical Scales
Histograms
Measures of Central Tendency: Measurement Data
Measures of Spread: Measurement Data
What creates Variance?
Measures of Central Tendency: Categorical Data
Measures of Spread: Categorical Data
Unbiased Estimators
Practical SPSS Summary
Chapter 3: Probability
Approaches to probability
Frequency histograms and probability
The asymptotic trend
The terminology of probability
The laws of probability
Bayes’ Rule
Continuous variables and probability
The standard normal distribution
The standard normal distribution and probability
Using the z-tables
Part II: Basic Research Designs
Chapter 4: Categorical data and hypothesis testing
The binomial distribution
Hypothesis testing with the binomial distribution
Conducting the binomial test with SPSS
Null hypothesis testing
The x2 goodness-of-fit test
The x2 goodness-of-fit test with more than two-categories
Conducting the x2 goodness-of-fit test with SPSS
Power and the x2 goodness-of-fit test
G -test
Can a failure to reject indicate support for a model?
Chapter 5: Testing for a Difference: Two Conditions
Building on the z-score
Testing a single sample
Independent-samples t-test
t-test assumptions
Pair-samples t-test
Confidence limits and intervals
Randomization test and bootstrapping
Nonparametric tests
Chapter 6: Observational studies: Two categorical variables
x2 goodness-of-fit test reviewed
x2 test of independence
The phi coefficient
Necessary assumptions
x2 test of independence SPSS example
Power, sample size, and the x2 test of independence
The third-variable problem
Multi-category nominal variables
Tests of independence with ordinal variables
Chapter 7: Observational studies: Two measurement variables
Tests of association for categorical data reviewed
The scatterplot
Covariance
The Pearson-Product Moment Correlation Coefficient
Simple regression analysis
The Ordinary Least Squares Regression Line (OLS)
The assumptions necessary for valid correlation and regression coefficients
Chapter 8: Testing for a difference: Multiple between-subject conditions (ANOVA)
Reviewing the t-test and the x2 test of independence
The logic of ANOVA: Two unbiased estimates of o2
ANOVA and the F-test
Standardized effect sizes and the F-test
Using SPPS to run an ANOVA F-test: Between-subjects design
The third-variable problem: Analysis of covariance (ANCOVA)
Non-parametric alternatives
Chapter 9: Testing for a difference: Multiple related-samples
Reviewing the between-subject ANOVA and the t-test
The logic of the randomized block design
Running a randomized block design with SPSS
The logic of the repeated-measures design
Running a repeated-measures design with SPSS
Non-parametric alternatives
Chapter 10: Testing for specific differences: Planned and unplanned tests
A priori versus post hoc tests
Per-comparison versus family-wise error rates
Planned comparisons: A priori test
Testing for polynomial trends
Unplanned comparisons: Post hoc tests
Non-parametric follow-up comparisons
Part III: Analyzing Complex Designs
Chapter 11: Testing for Differences: ANOVA and Factorial Designs
Reviewing the independent-samples ANOVA
The logic of factorial designs: Two between-subject independent variables
Main and simple effects
Two Between-Subject Factorial ANOVA with SPSS
Fixed versus random factors
Analyzing a mixed-design ANOVA with SPSS
Non-parametric alternatives
Chapter 12: Multiple Regression
Regression revisited
Introducing a second predictor
A detailed example
Issues concerning normality
Missing data
Testing for linearity and homoscedasticity
A multiple regression: The first pass
Addressing multicollinearity
Interactions
What can go wrong?
Chapter 13: Factor analysis
What is factor analysis?
Correlation coefficients revisited
The correlation matrix and PCA
The component matrix
The rotated component matrix
A detailed example
Choosing a method of rotation
Sample size requirements
Hierarchical multiple factor analysis
The effects of variable selection