Education Technology

# Knowledge Base

## Solution 34731: Using the Mean() Function on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.

### How do I use the mean() function on the TI-83 Plus and TI-84 Plus family of graphing calculators?

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}

1) From the main screen, press [2nd] [stat] to access the LIST menu
2) Press [→] [→] to scroll to MATH and then press [3] to select 3: mean(
3) Input {1,2,3,4})
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}

1) From the main screen, press [2nd] [stat] to access the LIST menu
2) Press [→] [→] to scroll to MATH and then press [3] to select 3: mean(
3) Input {1,2,3,4} and press [ , ]
4) Input {2,3,1,2})
5) Press [enter] for the result of 2.25 to be displayed

Please see the TI-83 Plus and TI-84 Plus Family guidebooks for additional information.

Last updated: 7/03/2023