Charting the performance of cricket all-rounders – IT Botham

August 16th, 2010

Cricket is a sport that generates a large volume of performance data and corresponding debate about the relative qualities of various players over their careers and in relation to their contemporaries. The cricinfo website has an extensive database of statistics for professional cricketers that can be searched to access the information in various formats. Read the rest of this entry »

Generating Balanced Incomplete Block Designs (BIBD)

July 16th, 2010

The Balanced Incomplete Block Design (BIBD) is a well studied experimental design that has various desirable features from a statistical perspective. The crossdes package in R provides a way to generate a block design for some given parameters and test wheter this design satisfies the BIBD conditions. Read the rest of this entry »

R Commander – two-way analysis of variance

June 25th, 2010

Two way analysis of variance models can be fitted to data using the R Commander GUI. The general approach is similar to fitting the other types of model in R Commander described in previous posts. Read the rest of this entry »

R Commander – one-way analysis of variance

June 25th, 2010

One way analysis of variance models can be fitted to data using the R Commander GUI. The general approach is similar to fitting the other types of model in R Commander described in previous posts. Read the rest of this entry »

R Commander – logistic regression

June 23rd, 2010

We can use the R Commander GUI to fit logistic regression models with one or more explanatory variables. There are also facilities to plot data and consider model diagnostics. The same series of menus as for linear models are used to fit a logistic regression model. Read the rest of this entry »