Question

practice it!
during the fall semester at school, you notice that you do not hear as many crickets chirping as you remember during the summer months.
you decide to investigate and conduct an experiment to find the reason.
you begin with the question, \how does temperature affect how often crickets chirp?\
based on your current observations and background knowledge, you create the hypothesis \if the temperature is warm, then the crickets will chirp more often.\
select the statement(s) that describe appropriate variables for the investigation above.
the outcome variable is the temperature of the room.
the test variable is the temperature of the room.
the test variable is the season of the year.
the outcome variable is the number of cricket chirps per minute.
the test variable is the number of cricket chirps per minute.

Explanation:

The test variable (independent variable) is what is changed in an experiment, and here it's the temperature which affects the outcome. The outcome variable (dependent variable) is what is measured as a result of the change in the test variable. In this experiment, the temperature of the room is manipulated (test variable) and the number of cricket chirps per minute is measured (outcome variable).

Answer:

The test variable is the temperature of the room.
The outcome variable is the number of cricket chirps per minute.