Idea 16of 22Builds onThe mode: the value that appears most
A value far from the rest
Which value doesn't fit with the others?
Today you'll discover
- how to spot a far-off value
- what to do with it
Think firstPoints a player scored in six games
Which score is far from all the others?
Decide first, then press Next. Find the dot that sits on its own.
A line plot of points in six games: dots at 10, 11, 12, 12 and 13, and one dot far off at 29, then ringed and marked far from the rest. Then the median line at 12 and the mean at 14.5. The last step shows push-ups by six students: 3, 15, 16, 16, 17, 18.
See the whole ideathe big idea and the key word, in one place
The big idea
An outlier is a value far from the rest of the data, either far above or far below.
Easy to get wrongThe biggest value is not always an outlier, and an outlier is not always the biggest. It only has to be far from the others.
Real outliersOne very hot day in April, one huge snowfall, one player's great game: real, worth saying, but not typical.
Key word
- outlier
- a value much bigger or much smaller than the rest of the data
Ready to use it?
- Spot an outlier in a data set or a line plot.