Texas Instruments TI-89 Titanium Short User Manual page 78

Steps and keystrokes
3. Using the sample data below, enter the
population in column 1.
Pop. (in 1000s)
150
500
800
250
500
750
950
Press 150 ¸ 500 ¸ 800 ¸ 250
¸ 500 ¸ 750 ¸ 950 ¸
4. Move the cursor to row 1 in column 2 (r1c2).
Then enter the corresponding number of
buildings.
8 C moves the cursor to the top of the
page. After typing data for a cell, you can
press ¸ or D to enter the data and
move the cursor down one cell. Pressing C
enters the data and moves the cursor up
one cell.
@ B 8 C 4 ¸ 31 ¸ 42 ¸ 9
¸ 20 ¸ 55 ¸ 73 ¸
5. Move the cursor to row 1 in column 1 (r1c1).
Sort the data in ascending order of
population.
This sorts column 1 and then adjusts all
other columns so that they retain the same
order as column 1. This is critical for
maintaining the relationships between
columns of data.
To sort column 1, the cursor can be
anywhere in column 1. This example has
you press
@ 8 C
so that you can see the first four rows.
@ A 8 C 2 ˆ 4
72
Bldgs > 12 stories
4
31
42
9
20
55
73
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