A Statistics value holds information like the mean and standard deviation of the x and y values of Data value (list of points), as well as the coefficients m and b of the regression line, the R^2 value, etc. Compute using statistics data.

Compute the mean of a column in a list of data, e.g.,

mean .x data

which computes the mean of the x-values.

Compute the mode of the data:

> data = [1, 5, 2, 2, 2, 2, 5, 3, 1]
> mode data
  Just (2,4) : Maybe ( number, Int )


> data = ["red", "green", "red", "blue", "blue", "red"]
> mode data
  Just ("red",3) : Maybe ( String, Int )

Apply filters to the data, This is set up as a pipeline so that other filters can be added later. We may have to go with different architectue if we have may filters -- best to avoid too many repeated list traversals.

Compute the maximum of a column in a list of data, e.g.,

maximum .x data

which computes the maximum of the x-values.

Compute the minimum of a column in a list of data, e.g.,

minimum .x data

which computes the minimum of the x-values.

Compute the statistics of a Data value.

Compute the standard deviation of a column in a list of data, e.g.,

stdev .x data

which computes the standard deviation of the x-values.