Twelfth Grade (Grade 12) Scientific Method Questions

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Grade 12 Scientific Method

Subjects were randomly assigned to two groups. One group was given an herb, and the other group a placebo. After six months, the number of respiratory tract infections each group had were compared. This is an example of an experiment.

True
False

Grade 12 Scientific Method

A researcher wants to do a procedure where neither the research assistants or the participants knows which group is being treated. Which procedure would the researcher use?

placebo effect
double-blind
blind
independent variable
confounding variable

Grade 12 Scientific Method

What type of study involves no researcher intervention?

experimental study
non-involvement study
observational study
quasi-experimental study

Grade 12 Scientific Method

What does a scientist do to an observational study to make it an experiment?

add subjects
identify a variable
randomly assign groups
impose a treatment

Grade 12 Scientific Method

Null Hypothesis If we swab a door handle there will be no difference in bacterial growth compared to a control.

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Twelfth Grade (Grade 12) Scientific Method Questions