Math Chapter 15: Lesson 2 The Purpose of Statistical Models

Why do different types of statistical models exist?

Essentially, all statistical models exist to find inferences between different types of variables and because there are different types of variables, there are different types of statistical models in which to analyze them.

Variables are collected in the form of data. What are the two major forms of data?

categorical and quantitative

The _____ is a condition or piece of data in an experiment that is controlled or influenced by an outside factor, most often the independent variable.

dependent variable

Sheila is a baker experimenting with a cake recipe. Specifically, she is monitoring how changes in the volume of cream affect the moistness of the cake. What kind of variable is the volume of cream, and why?

it is an independent variable because it is a condition in the experiment that can be changed.

Jim is studying how differences in the screen color of electronic devices make an impact on eye strain experienced by the user. In these experiments, which is the response variable and which is the explanatory variable.

the response variable is eye strain; the explanatory variable is screen color