Flowchart Of Decision Tree For Choosing A Statistical Test

Based on a statistics flowchart produced by andy field.

Flowchart of decision tree for choosing a statistical test. Choosing the correct statistical test in sas stata spss and r the following table shows general guidelines for choosing a statistical analysis. Find critical value in table. A statistical decision tree steps to significance testing. Test details from wikipedia.

The decision tree for statistics the material used in this guide is based upon a guide for selecting statistical techniques for analyzing social science data second edit ion produced at the institute for social research the university of michigan under the authorship of frank m. Selecting the right statistical analysis flowchart decision tree start with the top line you will have a choice. Make a decision retain or reject. Mark the rejection regions.

Andrews laura klem terrence n. Define h o and h a. The use of decision trees is one sure way of achieving this sacred end. Tukey s or bonferroni s anova kruskal wallis test student s unpaired t test paired t test mann whitney u or wilcoxon rank sums test how many treatment groups.

We emphasize that these are general guidelines and should not be construed as hard and fast rules. As someone who needs statistical knowledge but is not a formally trained statistician i d find it helpful to have a flowchart or some kind of decision tree to help me choose the correct approach to solve a particular problem eg. Code based on the decisiontree jquery plugin by dan smith decisiontree jquery plugin by dan smith. Tests for equal variances means parametricnonparametric two groups more than two groups parametricnonparametric if significant do a parametric nonparametric post hoc test e g.

As you move down the table you will make more choices until you have settled on the best statistical approach for your investigation project. Do you need this and know that and that and consider data to be normally distributed. The aim of this article is to present an easy method to choose the correct statistical test. Write out your conclusion in words and statistics use your.

Therefore knowledge on choosing the correct test is a must for the researcher. Pick your test α 1 tailed vs. Decision tree a decision is a flow chart or a tree like model of the decisions to be made and their likely consequences or outcomes. Statistical tests the software will present him her with a whole array of tests a mix of relevant and irrelevant.

Choosing the right statistical test is part of the course that require patience and practice. Calculate your test statistics t or f 5.