Small-group support
The IQR is the length of the middle half.
min 2, Q1 5, median 8, Q3 12, max 18
A box plot has Q1 = 5 and Q3 = 12.
The interquartile range is the length of the interval that holds the middle 50% of the data. The range holds everything from least to greatest.
Problem 1 of 4. A short entry task, a model, guided examples, then a new independent try. Frames are optional.
min 2, Q1 5, median 8, Q3 12, max 18