beautypg.com

Statistics and data plots – Texas Instruments TITANIUM TI-89 User Manual

Page 119

background image

Previews

119

Statistics and Data Plots

Statistics and Data Plots

Statistics and Data Plots

Statistics and Data Plots

Based on a sample of seven cities, enter data that relates population to the number of
buildings with more than 12 stories. Using Median-Median and linear regression
calculations, find and plot equations to fit the data. For each regression equation, predict
how many buildings of more than 12 stories you would expect in a city of 300,000
people.

Steps and keystrokes

Display

1. Display the

MODE

dialog box. For

Graph

mode, select

FUNCTION

.

Press

3 B 1 ¸

2. Use

•O to display the

Data/Matrix

Editor

. Create a new data variable named

BUILD

.

Press 3

D D BUILD ¸ ¸