# summary1way: One-way Analysis of Variance Summary In s20x: Functions for University of Auckland Course STATS 201/208 Data Analysis

## 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

 ``` 1 2 3 4 5 6 7 8 9 10``` ```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 `TRUE`, print out the output on the screen. `draw.plot` if `TRUE`, 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`

`summary2way`, `anova`, `aov`, `dummy.coef`, `onewayPlot`
 ```1 2 3 4 5 6 7``` ```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 ```