1. The problem statement, all variables and given/known data Suppose that I have the following groups/categories with how each is measured next to them: Response to light – measured on a scale of 1 to 4 HDL levels – continuous value from 1 to 100 Smoker status - smoker or non-smoker The question is as follows: What are the highest-level measures of central tendency and variability that can be used? 2. Relevant equations If descriptive, equations would not apply. 3. The attempt at a solution I know that central tendency includes mean, mode, and median and variability includes variance and standard deviation, but could someone please tell me what is meant by “highest-level measures”? Do I include the descriptive term (for example, central tendency answer "mean") or an actual measurement? Thank you.