ACT Preparation / Unit 15 ACT 1407 short lesson, about 20 seconds
Mean, Median and Mode
Captions available
The idea
The mean is the sum divided by the count. The median is the middle value of the ordered data, or the average of the two middle values. The mode is the most frequent value.
In practice
For 3, 5, 5, 8, 9: mean 30/5 = 6, median 5, mode 5.
Where people slip
Order the data before finding the median.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
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