Find the determinants of the matrices in Exercises 1 through 10, and find out which of these matrices are invertible.

Part II Descriptive Statistics CHAPTER 2: Organizing Data Section 2.1 Variables and Data • Variables: characteristic that varies from one person or thing to another • Data: Value of a variable. Variable Qualitative variables: Non-numerically Quantitative variables: Numerically valued values variable. variable. Ex: sex, eye color, names Ex: weight, height, number of siblings Discrete variable: Quantitative Continuous variable: Quantitative variable variable whose possible values can whose possible values f