SPSS CORRELATIONS – Beginners Tutorial

SPSS CORRELATIONS creates tables with Pearson correlations and their underlying N’s and significance levels. For Spearman rank correlations and Kendall’s tau, use NONPAR-CORR. Both commands can be pasted from Analyze  Correlate  Bivariate. This tutorial quickly walks through the main options. We’ll use freelancers.sav throughout and we encourage you to download it and follow along with the examples. User Missing Values Before running any […]

SPSS Command Types

Summary SPSS commands come in three basic types: procedures, transformations and other commands. Understanding this distinction will allow you to get things done in SPSS faster and more efficiently. SPSS Command Types Diagram SPSS Transformations As shown in the figure, the first question is when a command is executed. Some SPSS commands are not carried out […]

SPSS Sampling Basics

Summary How to draw one or many samples from your data in SPSS? This tutorial demonstrates some simple ways for doing so. We’ll point out some tips, tricks and pitfalls along the way. Let’s get started and create some test data by running the syntax below. SPSS Syntax for Creating Test Data *Create test data with […]

Null Hypothesis – Simple Introduction

A null hypothesis is a precise statement about a population that we try to reject with sample data. We don’t usually believe our null hypothesis (or H0) to be true. However, we need some exact statement as a starting point for statistical significance testing. Null Hypothesis Examples Often -but not always- the null hypothesis states there is […]