a scientist injected a group of 8 rats with a new compound called "perkup" and he gave another group of 8 rats a placebo. he waited exactly 1 hour after the injections so that the absorption of the injections was complete and then he placed each of the rats in an activity measuring apparatus.
what is the independent variable and dependent variable?What is the dependent and independent variable?
the independent is the compound and the dependent is whatever the result is.
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