Here are problems that are similar to the ones you might see on the exam. Be sure to also review old homework and workshop questions too. The exam will have both multiple choice and short answer questions.
Know all the terminology: Populations, Samples, Individuals, Variables, Statistics, Parameters, etc.
Make sure you know the difference between random error and bias. What is the best way to avoid bias? What is the best way to minimize random error?
Know the difference between explanatory variables, response variables, and lurking variables. Also, make sure that you understand why randomized controlled experiments let you establish cause and effect.
Make sure you know all of the different ways to plot numerical data: Boxplots, Stemplots, Histograms, Scatterplots.
Make sure you know how to make a stacked bar graph showing percentages, and how to find a relative risk from a contingency table.