96 Chapter 3 Numerical Summaries of Data USING TECHNOLOGY We use Example 3.1 to illustrate the technology steps. TI-84 PLUS Computing the mean and median Step 1. Enter the data into L1 in the data editor by pressing STAT then 1: Edit. For Example 3.1, we use 78, 83, 92, 68, 85 (Figure A). Step 2. Press STAT and highlight the CALC menu. Step 3. Select 1-Var Stats and press ENTER. The 1-Var Stats command is now shown on the home screen. Step 4. Enter the list name L1 next to the 1-Var Stats command by pressing 2nd, then L1 (Figure B). Step 5. Press ENTER. The descriptive statistics are displayed on the screen (Figures C and D). Using the TI-84 PLUS Stat Wizards (see Appendix B for more information) Step 1. Enter the data into L1 in the data editor by pressing STAT then 1: Edit. For Example 3,1, we use 78, 83, 92, 68, 85 (Figure A). Figure A Figure B Figure C Figure D Step 2. Press STAT and highlight the CALC menu. Step 3. Select 1-Var Stats and press ENTER. Enter L1 next to the List fleld. Keep the FreqList field blank. Step 4. Select Calculate and press ENTER. The descriptive statistics are displayed on the screen (Figures C and D). MINITAB Computing the mean and median Step 1. Enter the data in Column C1. For Example 3.1, we use 78, 83, 92, 68, 85. Step 2. Click on Stat, then Basic Statistics, then Display Descriptive Statistics... . Step 3. Enter C1 in the Variables field. Step 4. Click Statistics and select the desired statistics. Press OK. Step 5. Press OK (Figure E). Figure E EXCEL Computing the mean and median Step 1. Enter the data in Column A. For Example 3.1, we use 78, 83, 92, 68, 85. Step 2. Select Data, then Data Analysis. Highlight Descriptive Statistics and press OK. Step 3. Enter the range of cells that contain the data in the Input Range field and check the Summary Statistics box. Step 4. Press OK (Figure F). Figure F
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