Body fat

Use this diagram to explain the use of slicing — dynamically selecting only individuals whose values for one variable are within a fairly narrow range.

Drag the red band on the jittered dot plot of Height to select 'slices' of people of similar heights. This can be used to show the relationship between Body fat and Weight of short people and tall people. Mention that

The data arise from a detailed study of 252 men which was intended to provide an estimate of an individual's body fat percentage from measurements that could easily be made with a tape measure, callipers and scales. (Accurate determination of body fat involves submersion in water!)

The diagram only shows the percentage body fat, weight and height of the men.