Mean

For a list: Returns the arithmetic mean.
With a frequency list: Returns the weighted mean.
For a matrix: Returns a row vector containing the mean of each column.
With a frequency matrix: Returns column-wise weighted means.

Syntax

mean(List)

mean(List, Frequency list)

mean(Matrix)

mean(Matrix, Frequency matrix)

Examples

Statistical calculations in the Notes app

Data can be defined by storing it in a variable or by entering it into a table. After that, you can calculate summary statistics using the menu 6: Statistics > 3: List Math. Alternatively, you can calculate all summary statistics at once by selecting 6: Statistics > 1: Stat Calculations > 1: One-Variable Statistics.

min, max, mean, stDevSamp, onevar

Sum, product and mean of quadratic roots

Statistics commands like sum, mean and product can be used with CAS too. Note how the mean of the roots matches the x-coordinate of the parabola's vertex.

zeros, sum, mean, product