MATH 134 -- Intensive Calculus For Science 2

March 18 -- Histograms to probability densities

This is our class's height histogram (graph representing

the distribution of heights of the 20 students in class on Friday, March 15).

The variable h is height (in inches), the vertical axis is the fraction of the class having

that height.

plotting commands

> display({hplot,gplot,lplot});

[Maple Plot]

So for example, by considering areas, from this we can see that

* .15 of the class, or three people, have height 70 <= h

* .25 of the class, or 5 people, have height 66 <= h and h <= 69

* If a person was selected at random from the class, there would be a

probability of .3 (or 30%), that the person had height 64 <= h and h <= 66