Education Technology

# Knowledge Base

## Solution 34731: Using the Mean() Function on the TI-84 Plus C Silver Edition Graphing Calculator.

### How do I use the mean() function on the TI-84 Plus C Silver Edition?

The syntax for the mean() function is listed below.

mean(list[,freqlist])

The mean() function return the mean or average of list with the frequency list (freqlist). If a freqlist is not specified in the mean() function, the default value for freqlist is 1. Each freqlist element counts the number of consecutive occurrences of the corresponding element in the list. Refer to the examples provided below.

Example: Find the mean of {1,2,3,4}

• From the main screen, press [2ND] [STAT] to access the LIST menu.
• Use the arrow keys to scroll to MATH and select 3:mean(.
• Input {1,2,3,4}).
• Press [ENTER] for the result of 2.5 to be displayed.

Example: Find the mean of {1,2,3,4} with the freqlist of {2,3,1,2}

• From the main screen, press [2ND] [STAT] to access the LIST menu.
• Use the arrow keys to scroll to MATH and select 3:mean(.
• Input {1,2,3,4} and press [,].
• Input {2,3,1,2}).
• Press [ENTER] for the result of 2.25 to be displayed.

Please see the TI-84 Plus C Silver Edition guidebook for additional information.