how to report bonferroni post hoc test

Please pay attention to issues of italics and spacing. Ask MetaFilter is where thousands of life's little questions are answered. You will note that significance levels in journal articles–especially in tables–are often reported as either "p > .05," "p < .05," "p < .01," or "p < .001." All posts copyright their original authors. Method’s and Formula page for Tukey’s method, How To Interpret R-squared in Regression Analysis, How to Interpret P-values and Coefficients in Regression Analysis, Measures of Central Tendency: Mean, Median, and Mode, Multicollinearity in Regression Analysis: Problems, Detection, and Solutions, Understanding Interaction Effects in Statistics, How to Interpret the F-test of Overall Significance in Regression Analysis, How to Perform Regression Analysis using Excel, Independent and Dependent Samples in Statistics, Independent and Identically Distributed Data (IID), Using Moving Averages to Smooth Time Series Data, Difference between Descriptive and Inferential Statistics. Social support also explained a significant proportion of variance in depression scores, R2 = .12, F(1, 225) = 42.64, p < .001. Email: zhaosd (at) comp.nus.edu.sg. Here is an example taken from statistics help for students.com. Shen is an Associate Professor in the Computer Science Department, National University of Singapore (NUS). Privacy Policy. ANOVAs (both one-way and two-way) are reported like the t test, but there are two degrees-of-freedom numbers to report. T Tests are reported like chi-squares, but only the degrees of freedom are in parentheses. http://my.ilstu.edu/~jhkahn/apastats.html, Dr. Jeffrey Kahn, Illinois State University. If your data met the assumption of homogeneity of variances, use Tukey's honestly significant difference (HSD) post hoc test. Also, with the exception of some p values, most statistics should be rounded to two decimal places. (2010). Just the means and standard deviations for each level of the independent variable? Join 6,442 readers in helping fund MetaFilter. Key Takeaway: The more group comparisons you make, the lower the statistical power of those comparisons. What statistics do I report for these post hoc test? My very specific questions are: 1. The following examples illustrate how to report statistics in the text of a research report. What statistics do I report for Bonferonni corrected post hoc tests? However, you should only run one post hoc test – do not run multiple post hoc tests. As I recall, when you click the "Bonferroni" option in the ANOVA post-hoc menu in SPSS, it runs entirely too many contrasts (some of which you might not actually care about) and then cruelly overcorrects for familywise error. As a rule of thumb, we reject the null hypothesis if p (or “Sig.”) < 0.05. “Taken together, these results suggest that high levels of sugar really do have an effect on memory for words. In other words, it’s the probability of getting a “false positive”, i.e.

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