
Understanding Experiments and Observational Studies
Interactive Video
•
Science
•
9th - 10th Grade
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference between causation and association?
Causation implies a direct effect, while association does not.
Neither implies a direct effect.
Association implies a direct effect, while causation does not.
Both imply a direct effect.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a lurking variable?
A variable that is always constant.
A variable that is irrelevant to the study.
A variable that is hidden and affects the relationship between variables.
A variable that is directly measured.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does an experiment differ from an observational study?
Observational studies are more reliable than experiments.
Experiments involve observation only.
Experiments involve applying treatments to provoke responses.
Observational studies involve applying treatments.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an experimental unit?
Anything the experiment is performed on.
A condition applied to a subject.
A hidden variable affecting the study.
A variable being measured.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a factor in an experiment?
The response variable being measured.
The hidden variable affecting results.
The outcome of the study.
The explanatory variable causing change.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example experiment, what is the response variable?
Level of oral health
Brand of toothpaste
Number of individuals
Brushing time
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many treatments are there in the example experiment?
Two
Three
Six
Nine
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