Posts tagged: sample

This post describes how to calculate a confidence interval on a sample set of more than 30 observations. For this example let's start out…

In the last post we looked at linear fit in order to visualize relationships between two variables. For instance we can explore the…

Running a one-sample t-test in SPSS is very straight forward. For the purpose of this example, let's use the demo.sav training dataset. From…

In this quick tutorial we'll look at performing a chi-square test on a single sample. More specifically, we'll look into performing a…

Performing a Kernel density estimation in Stata is a simple task. In particular it can be visualized by way of a kernel density plot which…

In this post we'll continue looking at factor variables, and in particular how they can interact with continuous variables. Interactions can…

In Stata categorical or binary, indicator, dummy variables (used interchangably) are treated as factor variables. Examples of categorical…

For the purpose of this tutorial, I'm gonna be using the sample data set demo.sav, available under installdir/IBM/SPSS/Statistics/[version…

In this post we'll have a look at the table command which can be used to visualise summary statistics by tabulating variables against one…

In order to browse or edit data cells in Stata, the browse and edit commands are the most commonly used. The difference between those two…