Educational Psychology / Unit 13 EDP 1222 short lesson, about 20 seconds
Correlation and Its Limits
Captions available
The idea
A correlation coefficient runs from minus one to plus one, its size giving strength and its sign direction; correlation allows prediction but does not show causation, because a confounding variable may drive both.
In practice
Admissions offices use test scores to predict grades.
Where people slip
Only an experiment with random assignment can establish cause.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
- Nothing yet depends on this.
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