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Bob is testing the effect of different liquids on plant growth. Which of the following would you expect to be a level of his independent variable?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
To test how different liquids affect plants, Bob sets up an experiment and uses all of the same species of plants, gives them all the same volume of liquid, and puts them in same environment. With this, what is Bob doing?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
Why are repeated trials important?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
How can you identify the Independent (Manipulated) variable?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
Why is it important to control your variables?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
Which data would be best represented with a bar graph?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
In an experiment using human subjects, why is it important to have lots of people in the study?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
What is the purpose of a control in an experiment?
To have enough data to create an average that helps eliminate the effect of variation in humans
It's effect is what's being tested
Controlling his variables
All of these
It mirrors the natural state and is used as a comparison for the experimental results
To make sure errors in the experiment do not ruin overall data
water
How many 7th graders prefer each color of Starburst
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