two-column matrix of class <code>freqtab</code>, where column 1 specifies the score scale and column 2 the frequencies for each score point

freqtab

This function returns the percentile ranks for each score point in a frequency distribution.

distribution

In educational and psychological measurement multiple
        forms of a test are often created, where forms are intended to
        be identical in difficulty and statistical characteristics. In
        the likely case that forms differ in difficulty, statistical
        methods of equating and linking allow for the conversion of
        scores on one form to the scale of another, essentially
        creating parallel forms. The equate package contains functions
        for traditional equating, including mean, linear, and
        equipercentile equating and methods for pre- and post-smoothing
        of score distributions.

px: Percentile Rank Function

Description

Usage

Arguments

Value

See Also

Examples