Module 3 (pt 1) Flashcards Preview

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Flashcards in Module 3 (pt 1) Deck (8)
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1
Q

1a. Define: Experimental variable

A

An aspect of an experiment that changes during the course of the experiment

2
Q

1b. Define: Control (of an experiment)

A

The variable or part of the experiment to which all others will be compared

3
Q

1c. Define: Blind experiments

A

Experiments in which the participants do not know whether or not they are a part of the control group

4
Q

1d. Define: Double-blind experiments

A

Experiments in which neither the participants not the people analyzing the results know who is in the control group

5
Q
  1. When is an experimental variable good and when should it be reduced or eliminated?
A

An experimental variable is good when you are using it to learn something from the experiment. An experimental variable should be reduced or eliminated when it affects the results of the experiment but you do not learn anything from it.

6
Q
  1. (Read story on page 80) What is the control for this experiment?
A

the shirt that is being washed with no laundry detergent at all

7
Q
  1. (Read story on page 80) What is the experimental variable that will be used to learn something from the experiment?
A

the type of detergent used

8
Q
  1. (Read story on page 80) What are the experimental variables that need to be reduced or eliminated?
A

the washers are different, the water can be at different temperatures, the shirts are different and finally, the amount of grass stain will be different in each shirt