Educational Psychology / Unit 13 EDP 1221 short lesson, about 20 seconds
Distributions and Averages
Captions available
The idea
Statistics begins with distributional thinking, since the whole distribution often reveals more than its center; a frequency distribution organizes scores, and the mean, median and mode summarize their center.
In practice
Two classes share a median of seventy, but one bunches its scores and the other spreads them wide.
Where people slip
The mean is pulled toward outliers; the median is not.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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