SPSS Correlation Analysis Tutorial
Pearson Correlations – Quick Introduction
Cramér’s V – What and Why?
SPSS – Kendall’s Concordance Coefficient W
SPSS Scatterplot Tutorial
SPSS – Create All Scatterplots Tool
SPSS Confidence Intervals for Correlations Tool
SPSS – Correlations in APA Format
SPSS CORRELATIONS Command
A Spearman rank correlation is a number between -1 and +1 that indicates to what extent 2 variables are monotonously related. Spearman Correlation – Example Spearman Rank Correlation – Basic Properties Spearman Rank Correlation – Assumptions Spearman Correlation – Formulas and Calculation Spearman Rank Correlation – Software Spearman Correlation – Example A sample of 1,000 […]
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 […]
We had 5 judges taste and rank 6 different beers. The data -shown above- are in beertest.sav. For answering which beer was rated best, a Friedman test would be appropriate because our rankings are ordinal variables. A second question, however, is to what extent do all 5 judges agree on their beer rankings? If our judges don’t agree at […]
Summary What’s the easiest way to obtain confidence intervals for Pearson correlations? Sadly, we couldn’t find these often requested statistics anywhere in SPSS. The best we encountered on the web were some ancient macros that, well… how to say this delicately… didn’t excel in user friendliness. This tutorial therefore proposes a freely downloadable, menu based tool […]
Creating a scatterplot in SPSS is pretty straightforward. However, I sometimes like to take a quick look at all scatterplots among a set of variables. So I created a simple tool that creates all of them in one click. All Scatterplots Tool – Download and Install First off, make sure you have SPSS version 18 or higher with the SPSS Python Essentials properly installed […]
Correlation Test – What Is It? Null Hypothesis Assumptions Correlation Test in SPSS Reporting Correlation Test – What Is It? A (Pearson) correlation is a number between -1 and +1 that indicates to what extent 2 metric variables are linearly related. It’s best understood by looking at some scatterplots. In short, a correlation of -1 indicates a perfect linear descending relation: higher scores on […]
Cramér’s V is a number between 0 and 1 that indicates how strongly two categorical variables are associated.If we’d like to know if 2 categorical variables are associated, our first option is the chi-square independence test. A significance level close to zero means that our variables are very unlikely to be completely unassociated in some population. However, this does not […]
Summary SPSS CORRELATIONS generates tables with Pearson correlations and their underlying N’s and p-values.* This tutorial quickly walks through its main options, using freelancers.sav for demonstrational purposes. User Missing Values Before running any correlations, we’ll first specify all values of one million dollars or more as user missing values for income_2010 through income_2014.* We’ll do so by running the following line […]
When running correlations in SPSS, we get the significance levels as well. In some cases, we don’t want that: if our data hold an entire population, such p-values are actually nonsensical. For some stupid reason, we can’t get correlations without significance levels from the correlations dialog. However, this tutorial shows 2 ways for getting them anyway. We’ll use adolescents.sav throughout. Correlation Table as Recommended […]
A large bank wants to gain insight into their employees’ job satisfaction. They carried out a survey, the results of which are in bank_clean.sav. The survey included the number of hours people work per week and their gross monthly salaries. Research Question It seems obvious that working hours are related to monthly salaries: employees who work […]
A Pearson correlation is a number between -1 and 1 that indicates the extent to which two variables are linearly related.The Pearson correlation is also known as the “product moment correlation coefficient” (PMCC) or simply “correlation”. Pearson correlations are suitable only for metric variables (which include dichotomous variables). For ordinal variables, use the Spearman correlation or Kendall’s tau and […]
