Monthly Archives: April 2009

Often researchers will need access to functionality that isn’t found in commercial statistics packages. This problem varies quite a bit and is meet with specialized solutions by the statistical community. These solutions are often cutting edge, reflecting new statistical research. … Continue reading →

Statistical power calculations are often needed at various stages of planning for establishing sample sizes. Elsewhere on this Blog I mention PiFace as a power calculation tool. However SAS users may find the following three SAS macros of interest. UnifyPow … Continue reading →

Sometimes it is important to reinvent the wheel, and sometimes not. Here is a site with a nice collection of contributed R graphic examples from a variety of R packages. Almost all are supportive of some statistical method for purposes … Continue reading →