A study is conducted to determine if there is a difference in final exam scores

Question

A study is conducted to determine if there is a difference in final exam scores in high school classrooms when different types of instructions are used. The two types of instruction included in the study are direct instructin and computer-based instruction.

What are the explanatory (X) and the response (Y) variables for this study?

a. The high school classroom is teh explanatory variable (X) and the type of isntruction is the response variable (Y)

b. The finale exam is the explanatory variable (X) and the type of instruction is the response variable (y)

c. The final exam is the explanatory variable (x) and the high school classroom is the response variable (Y)

d. the type of instruction is the explanatory variable (x) and teh test score is the response variable (y)

Thank you!

Explanation / Answer

An explanatory variable is a type of independent variable. The two terms are often used interchangeably. But thereis a subtle difference between the two. When a variable is independent, it is not affected at all by any other variables. When a variable isn’t independent for certain, it’s an explanatory variable.

The response variable is the focus of a question in a study or experiment. An explanatory variable is one that explains changes in that variable. It can be anything that might affect the response variable

Thus,

Type of instruction is an explanatory variable and test score is the response variable.

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