Small-group support
Bar height is frequency.
30–4
55–9
210–14
A histogram’s bar height tells how many data values fall in that interval.
In a histogram, frequency is encoded by height. Counting bars answers how the axis was chopped up, not how many observations were collected.
Problem 1 of 4. A short entry task, a model, guided examples, then a new independent try. Frames are optional.
30–4
55–9
210–14