Read the following scenario, and answer the questions below.

THE EXPERIMENT:
Researchers wanted to determine whether pesticide Z is effective at killing grasshoppers that typically invade cornfields. Two 10- acre cornfields located 1 mile apart were chosen. The cornfield to the west was sprayed only with water. The cornfield on the east received the same amount of water with a 10% solution of pesticide Z. The number of grasshoppers in the fields was recorded every week for 10 weeks.

RESULTS:
The number of grasshoppers in the west field treated only with water doubled after 10 weeks.
The number of grasshoppers in the east field treated with pesticide Z declined by 50% after 10 weeks.

-What was the independent variable in the above experiment?
A)The location of the fields
B)The number of grasshoppers receiving the pesticide
C)The number of grasshoppers after 10 weeks
D)Whether pesticide Z was applied

Question

Read the following scenario, and answer the questions below.

THE EXPERIMENT:
Researchers wanted to determine whether pesticide Z is effective at killing grasshoppers that typically invade cornfields. Two 10- acre cornfields located 1 mile apart were chosen. The cornfield to the west was sprayed only with water. The cornfield on the east received the same amount of water with a 10% solution of pesticide Z. The number of grasshoppers in the fields was recorded every week for 10 weeks.

RESULTS:
The number of grasshoppers in the west field treated only with water doubled after 10 weeks.
The number of grasshoppers in the east field treated with pesticide Z declined by 50% after 10 weeks.

-What was the independent variable in the above experiment?
A)The location of the fields
B)The number of grasshoppers receiving the pesticide
C)The number of grasshoppers after 10 weeks
D)Whether pesticide Z was applied

Quizplus · Accepted Answer

The independent variable in the experiment is the application of pesticide Z. This is because it is the variable that is being manipulated by the researcher to see its effect on the grasshopper population. The location of the fields, the number of grasshoppers receiving the pesticide, and the number of grasshoppers after 10 weeks are all dependent variables that are being measured in response to the independent variable of pesticide application.

Read the Following Scenario, and Answer the Questions Below