CASTI-89 TITANIUM · CALC89
mean(
Returns the arithmetic mean of the elements of a list.
Syntax
mean(List[, FreqList])
- Group
- Statistics
- Arguments
- Takes the list and an optional frequency list.
- Availability
- Included
- Menu path
- MATH ▸ List ▸ mean(
Example
| Input | Result |
|---|---|
| mean({1,2,3,4}) | 5/2 |
Typing mean({1,2,3,4}) on the home screen and pressing ENTER returns 5/2.
Keystrokes on the TI-89 Titanium
2NDMATH3▶▶3
The same key sequence inserts mean( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- median(Returns the median of the elements of a list.
- MedMedFits a median median line to data, a line that is resistant to outliers.
- MultRegPerforms a multiple linear regression of one y list on several x lists.
- MultRegIntervalsComputes a confidence interval for a predicted value from a multiple linear regression.
- MultRegTestsPerforms the F test and t tests of a multiple linear regression.
- OneVarComputes one variable statistics of a list, such as mean, standard deviation and quartiles.
- PowerRegFits a power model y=a·x^b to data with least squares regression.
- QuadRegFits a quadratic y=a·x^2+b·x+c to data with least squares regression.