This document provides instructions for entering and analyzing sample data in lists on a graphing calculator. It describes how to clear all lists, enter data into lists, sort the data, and find the mean, median, mode, minimum and maximum values, and range of the data in a list. Calculations and results are provided for an example data set containing 11 numbers.

1. Clearing All Lists Press [2nd] [MEM] to display the MEMORY menu. Select 4:ClrAllLists Press [ENTER] to clear all lists.

2. Entering Data into Lists Press [STAT] [ENTER] Use right/left arrow keys to find the desired list. If entering only one list, use L1. If the list already contains data, use UP arrow key to move to top of list. Then press [CLEAR] [ENTER] Enter all data by keying in each number and pressing [ENTER] When done, press [2nd] [QUIT]

3. Entering Sample Data into L1 Press [STAT] [ENTER] Enter these 11 data items into L1: 22, 6, 7, 22, 1, 6, 6, 20, 22, 19, 6 When done, press [2nd] [QUIT]

4. Sorting Your Sample Data For many of the statistics we’ll be working with, it is helpful to arrange the data in order, from least to greatest. To put your list in ascending order, press [STAT] then 2. You’ll see “SortA(“ on your screen. Select your list number, then close parenthesis and press [ENTER]. To see your sorted list, press [L1] [ENTER] –OR- go to [STAT] [ENTER].

5. In this example… Write the data for this example in sorted order: ___, ___, ___, ___, ___, ___, ___, ___, ___, ___, ___ Calculate the range: _______________ Write the median: _____________ Write the mode: ______________

6. Finding the Mean by hand To find the sum of your data: After you enter your list, press [2nd] [LIST], then move to MATH Select 5:sum(, select your list number, then close parenthesis and press [ENTER] To find the number of data elements: Go back to your list: [STAT] [ENTER] Scroll down to find the last entry in your list. Write the equation and calculate the mean in this example: ____________________

7. Finding the Mean of a List Press [2nd] [LIST] Press the right arrow key twice to move to MATH Select 3:mean( Press [2 nd ], then your list number (usually L1) Press [)], close parenthesis, then [ENTER] – your mean is displayed.

8. Finding the Median of a List Press [2nd] [LIST] Press the right arrow key twice to move to MATH Select 4:median( Press [2 nd ], then your list number (usually L1) Press [)], close parenthesis, then [ENTER] – your median is displayed.

9. Finding the Min and Max of a List After you enter your list, press [2nd] [LIST], then move to MATH To find the minimum value in the list: Select 1:min(, select your list number, then close parenthesis and press [ENTER] To find the maximum value in the list: Select 2:max(, select your list number, then close parenthesis and press [ENTER] Use the Min and Max values to calculate the range: ___________________________

10. Finding the Mode You find the mode by visually inspecting your list, after it is arranged in order. To put your list in ascending order, press [STAT] then 2. You’ll see “SortA(“ on your screen. Select your list number, then close parenthesis and press [ENTER]. To see your sorted list, press [L1] [ENTER] –OR- go to [STAT] [ENTER].