Studying Statistics: Filtering Data By Categories - Texas Instruments TI-89 Titanium Short User Manual

Observe that the global behavior of the
represented by the quadratic quotient
basically a quadratic function as
negative directions.
The lower graph is
separately using the line style.

Studying Statistics: Filtering Data by Categories

This activity provides a statistical study of the weights of high school
students using categories to filter the data.
Filtering Data by Categories
Each student is placed into one of eight categories depending on the
student's sex and academic year (freshman, sophomore, junior, or senior).
The data (weight in pounds) and respective categories are entered in the
Data/Matrix Editor.
Table 1: Category vs. Description
Category (C2)
1
2
3
4
5
6
7
8
Activities
gets very large in both the positive and
x
graphed
y3(x)=f(x)
Academic Year and Sex
Freshman boys
Freshman girls
Sophomore boys
Sophomore girls
Junior boys
Junior girls
Senior boys
Senior girls
function is basically
f(x)
. The rational expression is
y2(x)
99