Texas Instruments TI-82 STATS Manuals

Part I: Texas Instruments TI-82 Graphics Calculator I.1 Getting started with the TI-82 I.1.1 Basics: Press the ON key to begin using your TI-82 calculator. If you need to adjust the display contrast, first press 2nd, then press and hold (the up arrow key) to lighten or (the down arrow key) to darken. As you press and hold or , an integer between 0 (lightest) and 9 (darkest) appears in the upper right corner of the display. When you have finished with the calculator, turn it off to conserve battery power by pressing 2nd and then OFF. Check the TI-82’s settings by pressing MODE. If necessary, use the arrow keys to move the blinking cursor to a setting you want to change. Press ENTER to select a new setting. To start, select the options along the left side of the MODE menu as illustrated in Figure I.1: normal display, floating decimals, radian measure, function graphs, connected lines, sequential plotting, and full screen display. Details on alternative options will be given later in this guide. For now, leave the MODE menu by pressing CLEAR. Figure I.1: MODE menu Figure I.2: Home screen I.1.2 Editing: One advantage of the TI-82 is that up to 8 lines are visible at one time, so you can see a long calculation. For example, type this sum (see Figure I.2): Then press ENTER to see the answer. Often we do not notice a mistake until we see how unreasonable an answer is. The TI-82 permits you to redisplay an entire calculation, edit it easily, then execute the corrected calculation. Suppose you had typed as in Figure I.2 but had not yet pressed ENTER, when you realize that 34 should have been 74. Simply press (the left arrow key) as many times as necessary to move the blinking cursor left to 3, then type 7 to write over it. On the other hand, if 34 should have been 384, move the cursor back to 4, press 2nd INS (the cursor changes to a blinking underline) and then type 8 (inserts at the cursor position and the other characters are pushed to the right). If the 34 should have been 3 only, move the cursor to 4 and press DEL to delete it. Technology Tip: To move quickly to the beginning on an expression you are currently editing, press (the up arrow key); to jump to the end of that expression, press (the down arrow key). Even if you had pressed ENTER, you may still edit the previous expression. Press 2nd and then ENTRY to recall the last expression that was entered. Now you can change it. In fact, the TI-82 retains many prior entries in a “last entry” storage area. Press 2nd ENTRY repeatedly until the previous line you want replaces the current line. 12 � 34 � 56 1 � 2 � 3 � 4 � 5 � 6 � 7 � 8 � 9 � 10 � 11 � 12 � 13 � 14 � 15 � 16 � 17 � 18 � 19 � 20 Graphing Technology Guide Copyright © by Houghton Mifflin Company. All rights reserved. I-1

GRAPHING CALCULATOR KEYSTROKE GUIDE to accompany ELEMENTARY ALGEBRA: DISCOVERY AND VISUALIZATION 2nd Edition Karl M. Zilm Lewis & Clark Community College HOUGHTON MIFFLIN COMPANY BOSTON NEW YORK

Copyright © Houghton Mifflin Company. All rights reserved. A-1 PART A TEXAS INSTRUMENTS TI-82/TI-83 GRAPHICS CALCULATORS Setup When using this Guide, you should always, unless instructed otherwise, use the calculator setup specified below: FOR THE TI-82 Before you begin, check the TI-82Õs basic setup by pressing MODE . Choose the settings shown in Figure 1. Check the statistical setup by pressing STAT (CALC) 3 (SetUp) . Choose the settings shown in Figure 2. Check the window format by pressing ENTER (FORMAT), and choose the settings shown in Figure 3. ¥ If you do not have the darkened choices shown in each of the figures below, use the arrow keys to move the blinking cursor over the setting you want to choose and press ENTER . ¥ Press 2nd MODE (QUIT) to return to the home screen. TI-82 Basic Setup TI-82 Statistical Setup TI-82 Window Setup FIGURE 1 FIGURE 2 FIGURE 3 FOR THE TI-83 Before you begin, check the TI-83Õs basic setup by pressing MODE . Choose the settings shown in Figure 4. Specify the statistical setup by pressing 2nd MODE (QUIT) STAT 5 (SetUpEditor) followed by 2nd 1 2nd 2 2nd 3 2nd 4 2nd 6 . Choose the settings shown in Figure 2. Press ENTER to view the screen in Figure 5. Also,

Copyright © Houghton Mifflin Company. All rights reserved. CHAPTER 2 TEXAS INSTRUMENTS TI-82 2.1 Getting Started with the TI-82 2.1.1 Basics: Press the ON key to begin using your TI-82 calculator. If you need to adjust the display contrast, first press 2nd, then press and hold ▲ (the up arrow key) to increase the contrast or ▼ (the down arrow key) to decrease the contrast. As you press and hold ▲ or ▼ , an integer between 0 (lightest) and 9 (darkest) appears in the upper right corner of the display. When you have finished with the calculator, turn it off to conserve battery power by pressing 2nd and then OFF. Check the TI-82’s settings by pressing MODE. If necessary, use the arrow keys to move the blinking cursor to a setting you want to change. Press ENTER to select a new setting. To start with, select the options along the left side of the MODE menu as illustrated in Figure 2.1: normal display, floating decimals, radian measure, function graphs, connected lines, sequential plotting, and full screen display. Details on alternative options will be given later in this guide. For now, leave the MODE menu by pressing CLEAR. Figure 2.1: MODE menu Figure 2.2: Home screen 2.1.2 Editing: One advantage of the TI-82 is that up to 8 lines are visible at one time, so you can see a long calculation. For example, type this sum (see Figure 2.2): 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 Then press ENTER to see the answer, too. Often we do not notice a mistake until we see how unreasonable an answer is. The TI-82 permits you to redisplay an entire calculation, edit it easily, then execute the corrected calculation. Suppose you had typed 12 + 34 + 56 as in Figure 2.2 but had not yet pressed ENTER, when you realize that 34 should have been 74. Simply press ◄ (the left arrow key) as many times as necessary to move the blinking cursor left to 3, then type 7 to write over it. On the other hand, if 34 should have been 384, move the cursor back to 4, press 2nd INS (the cursor changes to a blinking underline) and then type 8 (inserts at the cursor position and other characters are pushed to the right). If the 34 should have been 3 only, move the cursor to 4 and press DEL to delete it.

TI-82 STATS GRAPHING CALCULATOR GUIDEBOOK © 1996, 2000, 2005 Texas Instruments Incorporated. IBM is a registered trademark of International Business Machines Corporation Macintosh is a registered trademark of Apple Computer, Inc.

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