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Name the explanatory variable and the response variable in each question…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Name the explanatory variable and the response variable in each question.
- Does the temperature of a classroom change how fast students solve puzzles?
- Do people who walk more each day have a lower resting heart rate?
- Does the price of a bus ticket change how many people take the bus?
Need a reminder? The key ideaShow
A survey asks, an observational study watches, and an experiment imposes a treatment. The explanatory variable is the possible cause and the response variable is the outcome. In an observational study, gap seen = real effect + the part due to who chose.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.
- Explanatory: the temperature of the classroom, in . Response: the time to solve a puzzle, in seconds.
- Explanatory: the number of steps walked each day. Response: the resting heart rate, in beats per minute.
- Explanatory: the price of a ticket. Response: the number of passengers.
Check. In each case the question reads: does the explanatory variable change the response variable?
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