Check your answers and workings for each chapter:

Chapter 1: Why you need science

Chapter 2: Reporting research, variables and measurement

Chapter 3: Summarizing data

Chapter 4: Fitting models (central tendency)

Chapter 5: Presenting data

Chapter 6: Z-scores

Chapter 7: Probability

Chapter 8: Inferential statistics: going beyond the data

Chapter 9: Robust estimation

Chapter 10: Hypothesis testing

Chapter 11: Modern approaches to theory testing

Chapter 12: Assumptions

Chapter 13: Relationships

Chapter 14: The general linear model

Chapter 15: Comparing two means

Chapter 16: Comparing several means

Chapter 17: Factorial designs