Answers Statistics and Probability Observational Studies and Experiments — QuizQuestion 2

2

QuizMultiple Choice

Observational Studies and Experiments — Quiz

Question 2 • Statistics and Probability

Which method describes an observational study?

Answer

A

Method 1 is an observational study because many people can be surveyed.

B

Method 1 is an observational study because no attempt is made to influence results.

C

Both methods are observational studies because information on both types of detergent can be collected.

D

Method 2 is an observational study because volunteers assess the fabrics.

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