Practical Data Analysis Examples

This directory contains examples from Brian Yandell's book Practical Data Analysis for Designed Experiments. File suffixes used in subdirectories include the following:
	*.dat		data
	*.sdat		data for S or Splus (if there are missing data)

	*.sas		SAS instructions (sometimes called "source")
	*.log		SAS log (check for errors)
	*.lst		SAS listing (sometimes called "output")
	*.prt		SAS condensed listings (from the saspr command)

	*.s		S (or Splus) instructions (or source files)
	*.sink		S listing
	*.script	S session using UNIX "script" command

	*.tex		LaTeX source
	*.ps		Postscript
	*.html		HyperText


Proper credit: If you use an algorithm, dataset, or other information from here, please acknowledge both PDA and the original contributor of the material.

A. Placing Data in Context

Design

B. Working with Groups of Data

Tomato | Cloning | Diet

C. Sorting out Effects with Data

Bacteria | Biotron | Budding | Company | Prefer | Running | Tukey

D. Dealing with Imbalance

BST | Growth | Hardy | Oocyte | Product

X. Counting Data

Count

E. Questioning Assumptions

Cloning | Growth | Genss | Variance

F. Regressing with Factors

Damage | Diet | Drying | Feed | Hardy | Iris | Iron | Leprosy | Wasp

G. Deciding on Fixed or Random Effects

Random | Select | Wheat

H. Nesting Experimental Units

Alfalfa | Bacteria | Berry | Brassica | Drying | Forage | Grain | Hardy | Potato | Strip | Tomato

I. Repeating Measures on the Same Subject

Chew | Drink | Paddock | Rumen | Season | Tree

Alphabetical List of Data Sets

Real Data Sets

Alfalfa
analysis of covariance in nested design
Bacteria
balanced factorial
philosophical challenge in nesting: assignment of treatment to egg or room?
Berry
RCB, split plot, repeated measures
Brassica
RCB, 2 years, split plot, slight change year to year
Budding
3 levels, additive and dominance?
Chew
two periods, polynomial contrasts
Cloning
one-factor ANOVA, multiple comparisons, unequal variance
Diet
analysis of covariance with blocks
Drink
complicated crossover design
Drying
nested design with covariate
Feed
one factor ancova with polynomial contrasts
Forage
split plot with two-factor in whole plot
Grain
RCB on farm trial
Growth
missing cell, transform, zeroes
Hardy
one factor with many levels, many responses
nesting
two-factor, ancova
Iris
ancova / discriminant analysis
Iron
error in variables
Oocyte
unbalanced factorial design
Paddock
complicated repeated measures
Potato
subsampling
Product
Taguchi L18 design -- planned missing cells
Rumen
split plot, replicated Latin square
Running
blocking, 3 factors
Season
repeated measures, missing data
Select
completely nested, fixed effects, selection
Tomato
nested design over 2 years, contrasts
Tree
repeated measures
Wasp
ancova / discriminant analysis
Wheat
completely nested, random effects

Artificial Data Sets

Biotron
RCBD
Bst
unbalanced factorial, contrasts
Company
RCBD
Damage
error in variables
Genss
simulate distribution of sums of squares
Leprosy
ancova from Snedecor and Cochran
Prefer
CRD and RCB (fictional data)
Random
random effects models
Strip
split strip plot (fictional data)
Tukey
Tukey and Mandel interaction plots/tests
Variance
testing with unequal variances

Other Schematic Plots

These do not have data associated with them.
Carry
cross-over design
Design
design schematics
Missing
missing data schematics
Nested
nested design schematics
Path
path diagrams
Random
random effects

Last modified: Mon Mar 2 14:34:14 1998 by Brian Yandell (yandell@stat.wisc.edu)