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This function computes statistics from a distribution table.

Form of use:

MT table [(part-id)] = %TSTA(table[(part-id)]),

Both pickup and putdown tables must be distribution tables.

The putdown table must contain eight cells. The eight cells of the table will contain the following summaries of the pickup:

number of cells (including any undefined)

number of cells (excluding undefined)

sum of cells (as produced by %TSUM)

sum of squares of cells

average (as produced by %TAVG)

standard deviation

standard error

error variance

Any cells with value U (undefined) are ignored completely except for the first returned value. If all cells are undefined then the results are undefined.

The above calculations assume that each cell contains the "score" for one individual response. This contrasts with normal tables where each cell contains an accumulation of individuals with a particular score.