Statistics 428 files
Files for examples:
- Bumblebees and pollen example.
- pollen.sas bumblebees and pollen example SAS command file with data in the file pollen.dat
- pollenD.sas bumblebees and pollen example SAS command file with data inline.
- pollen.lst bumblebees and pollen example output
- Ragwort flea beetle example.
- ragwort.sas Ragwort flea beetle example SAS command file with data in the file ragwort.dat
- ragwortD.sas Ragwort flea beetle example SAS command file with data inline.
- ragwort.lst Ragwort flea beetle example output
- Electricity load example.
- electric.sas Electricity load example SAS command file with data in the file electric.dat
- electric.lst Electricity load example output
- Motor vehicle deaths example.
- mvdeath.sas Motor vehicle deaths example SAS command file with data in the file mvdeath.dat
- mvdeath.lst Motor vehicle deaths example output
- Iowa corn yield example.
- iowacorn1.sas and iowacorn2.sas Iowa corn yield example SAS command files with data in the file iowacorn.dat
- iowacorn1.lst and iowacorn2.lst Iowa corn yield example output
- Toxic effects of copper and zinc in minnow larvae example.
PART 2: Regression.
Chapters 9 and 10 and simple linear regression handout.
Introduction to least squares estimation and the simple linear regression model. A formal test for systematic lack of fit.- arsenic1.sas ( arsenic.dat) Arsenic concentration example: simple linear model
- soymilk.sas first part ( soymilk.dat) Soymilk protein example: test for lack of fit)
More complicated regression models handout and meat pH example handout.
Polynomial models, transformations, comparison of regression lines, piecewise linear models, comparison of regression curves, and inverse prediction (calibration).- wheatprot.sas ( wheatprot.dat) Wheat protein example: quadratic model wheatprot.lst
- soymilk.sas second part ( soymilk.dat) Soymilk protein example: quadratic model soymilk.lst
- willow.sas ( willow.dat) Willow size example: transformation of the explanatory variable willow.lst
- arsenic2.sas ( arsenic.dat) Arsenic concentration example: transformation of the response variable arsenic2.lst
- turkey.sas ( turket.dat) Turkey growth example: comparison of regression lines turkey.lst
- laftemps.sas ( laftemps.dat) Lafayette temperature example: piecewise linear model with a jump laftemps.lst
- corn.sas ( corn.dat) Iowa corn yield example: piecewise linear model without a jump corn.lst
- meatph.sas ( meatph.dat) Meat pH example: comparison of regression curves and inverse prediction meatph.lst
Models with two or more measured explanatory variables handout.
Interpretation of regression coefficients for a model with two or more measured quantitative explanatory variables. The sequential approach to fitting a model with two or more measured explanatory variables.- firefly1.sas and firefly2.sas ( firefly.dat) Firefly example: a model with two measured explanatory variables firefly1.lst and firefly2.lst
Model selection handout.
Part 1: The all possible regressions approach to model selection. Part 2: Stagewise methods for variable selection.- hald.sas and hald2.sas Hald cement example. hald.lst and hald2.lst
- fitness.sas and fitness2.sas ( fitness.dat) Fitness example. fitness.lst and fitness2.lst
PART 3: Second visit to means models.
Cell means models and inference for linear combinations of means handout.
Inference for cell means models: one and two way classifications, choice of contrasts, orthogonal contrasts, orthogonal polynomial contrasts, simple and main effects, interaction.- potato2.sas ( potato.dat) potato leafhopper example potato2.lst
- scab.sas ( scab.dat) potato scab disease example scab.lst
- ratdiet.sas ( ratdiet.dat) rat diet protein example ratdiet.lst
- mousediet.sas ( mousediet.dat) mouse dietary restriction example mousediet.lst
- swamp.sas ( swamp.dat) swamp pH example swamp.lst
PART 4: Blocking and covariates.
Randomized complete block designs and analysis of covariance handout.
- cotton.sas ( cotton.dat) cotton strength example cotton.lst
- manure.sas ( manure.dat) green manure yield example manure.lst
- soybean.sas ( soybean.dat) soybean seed yield example soybean.lst