aov1: ANOVA with Type I SS

Description

ANOVA with Type I SS.

Usage

aov1(Formula, Data, BETA=FALSE, Resid=FALSE)

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.

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

Author

Kyun-Seop Bae k@acr.kr

Details

It performs the core function of SAS PROC ANOVA.

Examples

Run this code

  aov1(uptake ~ Plant + Type + Treatment + conc, CO2)
  aov1(uptake ~ Plant + Type + Treatment + conc, CO2, BETA=TRUE)
  aov1(uptake ~ Plant + Type + Treatment + conc, CO2, Resid=TRUE)
  aov1(uptake ~ Plant + Type + Treatment + conc, CO2, BETA=TRUE, Resid=TRUE)

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