Quiz 5 Flashcards
(10 cards)
Some drank OJ some didn’t to stop back pain. What is the explanatory variable in the situation above?
drinking OJ
The following situation, which is the response variable and which is the explanatory variable: the amount of sunlight and the height of a plant;
response varibles: height of plant; explanatory amount of sunlight
In the situation above, what is the response variable?
Amount of back pain
In the situation above, what is the lurking variable?
the medication
People receiving placebo thought they were getting better… Whats going on here?
Placebo affect
Comparing treatments to control the effects of the lurking variables in knownas:
Randomized comparative experiments
Randomization is important in the logic of experimental design because it:
Reduces bias, creates group that are similar in all variables reduces the effects of confounding and lurking variables
Differences between the effects of treatments that are so large that they would rarely happen by chance are called:
statistically significant
The following are characteristics of observational studies except
can actively impose a treatment on subjects being studied
The best method for testing causations would be:
Experimentation
