AP Statistics - Chapter 4 - Experimental Design

Flashcard
•
Mathematics
•
10th - 12th Grade
•
Hard
+1
Standards-aligned
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1.
FLASHCARD QUESTION
Front
What is an experiment in the context of statistics?
Back
A controlled study in which the researcher attempts to understand cause-and-effect relationships by assigning subjects to groups and deciding which treatments each group receives.
Tags
CCSS.HSS.IC.B.3
2.
FLASHCARD QUESTION
Front
Why is the experimental design in the rubber band test flawed?
Back
Temperature is confounded with brand, making it difficult to isolate the effect of temperature on elasticity.
Tags
CCSS.HSS.IC.B.3
3.
FLASHCARD QUESTION
Front
What type of sampling method is used when a psychologist randomly selects schools and tests all ninth-grade students in those schools?
Back
Cluster Sample.
Tags
CCSS.HSS.IC.B.3
4.
FLASHCARD QUESTION
Front
What sampling method is used when the president of a college selects 2 students from each department?
Back
Stratified Sampling.
Tags
CCSS.7.SP.A.1
CCSS.HSS.IC.A.1
5.
FLASHCARD QUESTION
Front
How can nonresponse bias affect survey results?
Back
The graduates who did not respond may represent a group that is homogeneous with respect to income and differs from the graduates who did respond.
Tags
CCSS.HSS.IC.B.3
6.
FLASHCARD QUESTION
Front
Define 'confounding variable' in experimental design.
Back
A confounding variable is an outside influence that changes the effect of a dependent and independent variable.
Tags
CCSS.HSS.IC.B.3
7.
FLASHCARD QUESTION
Front
What is the difference between a census and a sample?
Back
A census includes every member of a population, while a sample includes only a subset of the population.
Tags
CCSS.7.SP.A.1
CCSS.HSS.IC.A.1
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