addProbs: Conditional and/or Marginal Probabilities

In DanielBiostatistics10th: Functions for Wayne W. Daniel's Biostatistics, Tenth Edition

Conditional and/or Marginal Probabilities

Description

Add conditional and/or marginal probabilities to a two-way contingency table.

Usage

addProbs(A, margin = seq_len(nd), fmt = "%d (%.1f%%)")

Arguments

A	matrix of typeof integer, two-dimensional contingency table. See addmargins
margin	integer scalar or vector, see addmargins
fmt	character scalar, C-style string format with a ⁠%d⁠ and an ⁠%f%%⁠ for the counts and proportions (order enforced).

Details

Function addProbs provides the joint, marginal (using margin = 1:2) and conditional (using margin = 1L or margin = 2L) probabilities of a two-dimensional contingency table.

Value

Function addProbs returns an 'addProbs' object, which inherits from table and noquote.

Note

margin.table (which is to be renamed as marginSums) is much slower than colSums.

The use of argument margin is the same as addmargins, and different from proportions!

See Also

rowSums colSums proportions

Examples

addProbs(table(warpbreaks$tension))

storage.mode(VADeaths) = 'integer'
addProbs(VADeaths)
addProbs(VADeaths, margin = 1L)
rowSums(proportions(VADeaths, margin = 1L))
addmargins(VADeaths, margin = 1L)

DanielBiostatistics10th documentation built on Oct. 16, 2024, 1:08 a.m.