Texas Instruments TITANIUM TI-89 - Manual (Page 119)

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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 ¸ ¸