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Variables
Test Description: Students will select the independent and dependent variables in sample problems.
Instructions: Answer all questions to get your test result.
1) A farmer applied different brands of fertilizer to his corn crops to see which one would make his plants grow taller. What is the independent variable (IV)?
A
height of the corn plants
B
brands of fertilizer
C
growth of the corn plants
D
types of corn plants
2) A farmer applied different brands of fertilizer to his corn crops to see which one would make his plants grow taller. What is the dependent variable (DV)?
A
growth of the corn plants
B
brands of fertilizer
C
types of corn plants
D
height of the corn plants
3) Jeff used different types of weed killer on his lawn to see which brand would kill the most weeds. What is the independent variable (IV)?
A
height of the weeds
B
types of weed killer
C
kinds of weeds
D
amount of weeds killed
4) Jeff used different types of weed killer on his lawn to see which brand would kill the most weeds. What is the dependent variable (DV)?
A
height of the weeds
B
amount of weeds killed
C
types if weed killer
D
kinds of weeds
5) Wanda wanted to choose a new brand of chips to sell in the school cafeteria. She ordered 3 brands of chips and decided to select the brand students bought most during a two week period. What is the independent variable (IV)?
A
brand bought by more students
B
price of the chips
C
brands of chips
D
kinds of snacks sold
6) Wanda wanted to sell a new brand of chips in the school cafeteria. She ordered 3 brands of chips and decided to keep the brand students bought most during a two week period. What is the dependent variable (DV)?
A
price of the chips
B
brands of chips
C
brand bought by more students
D
kinds of snacks sold
7) A scientist wanted to learn which color of flower attracted more bees. She grew different colors of the same flower in the garden and counted how many bees visited each color of flower. What is the independent variable (IV)?
A
number of bees visiting each color
B
type of bees visiting each color
C
flower color
D
flower height
8) A scientist wanted to learn which color of flower attracted more bees. She grew different colors of the same flower in the garden and counted how many bees visited each color of flower. What is the dependent variable (DV)?
A
flower height
B
flower color
C
type of bees visiting each color
D
number of bees visiting each color
9) The independent variable (IV) is the one scientists change.
A
False
B
True
10) The control is something that does not change in an experiment.
A
false
B
true
11) The dependent variable is what the scientist measures or counts when they collect data.
A
False
B
True
*select an answer for all questions
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