chi-square test

Comparing Two Distributions

August 29, 2011 | 0 Comments

Here I compare two distributions, flowering duration of indigenous and allochtonous plant species. The hypothesis is that alien compared to indigenous plant species exhibit longer flowering periods. Read more » [Read more...]

Number of components in a mixture

August 5, 2011 | 0 Comments

I got a paper (unavailable online) to referee about testing for the order (i.e. the number of components) of a normal mixture. Although this is an easily spelled problem, namely estimate k in I came to the conclusion that it is a kind of ill-posed problem. Without a clear ... [Read more...]

Example 9.3: augmented display of contingency table

July 18, 2011 | 0 Comments

SAS and R often provide different levels of details from output. This is particularly true for the descriptive analysis of contingency tables, where SAS makes it easy to display tables with additional quantities (such as the observed cell count).The m...
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