Which of the following is the most accurate definition of a variable?
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Question 2
2.
Why is it generally important for scientists to run controlled experiments?
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Question 3
3.
Which of the following could be considered the independent variable(s) that is being studied in this experimental setup? (Select all that apply)
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Question 4
4.
Which of the following could be considered the dependent variable(s) that is being studied in this experimental setup? (Select all that apply)
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Question 5
5.
Which of the following could be considered the constant variable(s) that is being studied in this experimental setup? (Select all that apply)
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Question 6
6.
Suppose a scientist is doing an experiment to determine the effect of an all-organic diet on the occurrence of cancer in rats. Which of the following would be the best control group for this experiment?
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Question 7
7.
Suppose a scientist is doing an experiment to determine the effect of an all-organic diet on the occurrence of cancer in rats. Which of the following would be the best experimental group for this experiment?
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Question 8
8.
Why is is necessary for scientists to use control group when implementing most experiments?
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Question 9
9.
Consider the research question, "Does the rate of crickets chirping change with temperature?" Which of the following questions correctly identifies the dependent and independent variable?
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Question 10
10.
Consider the research question, "Does the nitrate concentration affect the size of leaves on an oak tree?" Which of the following choice(s) correctly identifies the variables that would need to be controlled for the experiment.