summary1way {s20x}R Documentation

One-way Analysis of Variance Summary

Description

Displays summary information for a one-way anova analysis. The lm object must come from a numerical response variable and a single factor. The output includes: (i) anova table; (ii) numeric summary; (iii) table of effects; (iv) plot of data with intervals.

Usage

summary1way(fit, digit = 5, conf.level = 0.95, inttype = "tukey",
             pooled = TRUE, print.out = TRUE, draw.plot = TRUE, ...)

Arguments

fit an lm object, i.e. the output from "lm()".
digit decimal numbers after the point.
conf.level confidence level of the intervals.
inttype three options for intervals appeared on plot: "hsd","lsd" or "ci".
pooled two options: pooled or unpooled standard deviation used for plotted intervals.
print.out if T, print out the output on the screen.
draw.plot if T, plot data with intervals.
... more options.

Value

Df degrees of freedom for regression, residual and total.
Sum of Sq sum squares for regression, residual and total.
Mean Sq mean squares for regression and residual.
F value F-statistic value.
Pr(F)
Main Effect
Group Effects

See Also

"summary2way", "anova", "aov", "dummy.coef", "plot.oneway"

Examples

attitudes <- c(5.2,5.2,6.1,6,5.75,5.6,6.25,6.8,6.87,7.1,
               6.3,6.35,5.5,5.75,4.6,5.36,5.85,5.9)
l <- rep(c("Gp1","Gp2","Gp3"),rep(6,3))
l <- factor(l)
f <-lm(attitudes ~ l)
result <- summary1way(f)
result

[Package s20x version 3.1-5 Index]