Explanatory and Response Variable and Percentages

A study is conducted to determine if one can predict the yield of a crop based on the amount of fertilizer applied to the soil.

In this experiment, the response variable is...

• yield of the crop

• amount of fertilizer applied to the soil

• soil

• the store the fertilizer is bought from

Tags

CCSS.HSS.IC.B.3

A public speaking teacher has developed a new lesson that she believes decreases student anxiety in public speaking situations more than the old lesson. In the test, Public speaking students are randomly assigned to receive either the new or old lesson; their anxiety levels during a variety of public speaking experiences are measured.

In this experiment the the explanatory variable is...

• the lesson received

• the students anxiety level

• the students grade level

• the students ATAR

A researcher believes that the origin of the beans used to make a cup of coffee affects hyperactivity. He wants to compare coffee from three different regions: Iran, Columbia, and Mexico.

In this experiment the Explanatory Variable is?

• origin of the the coffee bean (Iran, Columbia, and Mexico)

• hyperactivity level of the coffee

• the price of the coffee

• the strength of the coffee

Tags

CCSS.HSS.IC.B.3

A group of year 12 students wants to know if they can use height to predict age. They take a random sample of 50 people at their school, both students and teachers, and record each individual's height and age.

In this study, the response variable is...

• age

• height

• school the students attend

• gender

The independent variable is also known as the:

• Response Variable

• Explanatory Variable

The response variable is plotted on the:

• y-axis

• x-axis