aov2: ANOVA with Type II SS

In sasLM: 'SAS' Linear Model

ANOVA with Type II SS

Description

ANOVA with Type II SS.

Usage

  aov2(Formula, Data, BETA=FALSE, Resid=FALSE)

Arguments

Formula	a conventional formula for a linear model.
Data	a data.frame to be analyzed
BETA	if TRUE, coefficients (parameters) of REG will be returned. This is equivalent to SOLUTION option of SAS PROC GLM
Resid	if TRUE, fitted values (y hat) and residuals will be returned

Details

It performs the core function of SAS PROC GLM, and returns Type II SS. This accepts continuous independent variables also.

Value

The result table is comparable to that of SAS PROC ANOVA.

Df	degree of freedom
Sum Sq	sum of square for the set of contrasts
Mean Sq	mean square
F value	F value for the F distribution
Pr(>F)	proability of larger than F value

Next returns are optional.

Parameter	Parameter table with standard error, t value, p value. TRUE is 1, and FALSE is 0 in the Estimable column. This is returned only with BETA=TRUE option.
Fitted	Fitted value or y hat. This is returned only with Resid=TRUE option.
Residual	Weigthed residuals. This is returned only with Resid=TRUE option.

Author(s)

Kyun-Seop Bae [e-mail]

Examples

  aov2(uptake ~ Plant + Type + Treatment + conc, CO2)
  aov2(uptake ~ Plant + Type + Treatment + conc, CO2, BETA=TRUE)
  aov2(uptake ~ Plant + Type + Treatment + conc, CO2, Resid=TRUE)
  aov2(uptake ~ Plant + Type + Treatment + conc, CO2, BETA=TRUE, Resid=TRUE)
  aov2(uptake ~ Type, CO2)
  aov2(uptake ~ Type - 1, CO2)

sasLM documentation built on Oct. 2, 2024, 9:06 a.m.