A complex survey involves collection of data in stages (single-stage or multiple-stage designs), drawn from different strata or clusters of the population. We use Stata statistical package for analyzing survey data. Stata has a powerful set of tools to do survey analyses that takes into account the multi-stage and/or clustering nature of the data.
I was asked if we can do the test of equality of two population variances using Stata. Well, I did not have to do it myself ever, but yes, it is possible to do it. Here is an example. I've just made-up the data to show the procedures.
Suppose we have the following data where the variables may represent two independent samples taken from normally distributed populations. And we want to test if the population variances of the two populations are the same. We will use the sample variances to do the testing.
The article outlines the steps required to make a stata graph template or stata scheme. Stata schemes control how a particular graph will look like in terms of color, line styles, and all other aesthetic aspects.
Stata is a popular statistical package for data analysis. This is one of the popular statistical packages that is being used by researchers and practitioners alike. Most notable users are from Epidemiology, Econometrics, Sociology.
