Question

1. in each situation of bivariate data there is causation, so the variables can be named explanatory and response variables. identify each explanatory variable and response variable.

a. number of days worked; amount earned
b. amount earned in the year, income taxes paid
c. temperature; number of swimmers at the beach

Explanation:

The explanatory variable is the one that is thought to cause or influence the other variable. The response variable is the one that responds to the change in the explanatory variable.

• In part a, the number of days worked influences the amount earned.
• In part b, the amount earned in the year influences the income - taxes paid.
• In part c, the temperature influences the number of swimmers at the beach.

Answer:

a. Explanatory variable: Number of days worked; Response variable: Amount earned
b. Explanatory variable: Amount earned in the year; Response variable: Income taxes paid
c. Explanatory variable: Temperature; Response variable: Number of swimmers at the beach