This course is called Statistical Reasoning in Psychology Chapter 1 What is Statistics? Describe the relationship between Statistics and Research. Explain Descriptive Statistics. Explain Inferential Statistics. Explain and provide an example of the following variables: (a.) Nominal (b.) Ordinal (c.) Interval - Also called equal-interval variable and referred to as a combined category in a group frequency table. (d.) Ratio Scale (e.) Continuous (f.) Discrete (g.) Quantitative - Also called numeric variable.