This headline popped up in my newsfeed this morning: Boys will be boys: Data error prompts U-turn on study of sex differences in school (Retraction Watch, 2017) The article is about a peer-reviewed article on self-regulation of study habits that was published earlier this year. In the retraction, the authors noted they had discovered a …
If you run into a problem, usually in an academic setting, where you only know the multiple coefficient of determination, R2, and are asked to test to see if the beta coefficients are non-zero, you can do this easily using Excel. You could also do it in StatCrunch using the Data > Compute tool, but …
Perform Hypothesis Test for a Regression Model, Given R Squared Read More »
In the real world, we most often work with real data. And we build regression models using software such as Excel, StatCrunch, and, more recently, R. The output of those regressions give us a world of information about the regression models, enabling us to quickly determine if the overall model is statistically significant and if …
This post is in development. In the interim, please try out the attached Excel workbook with a couple of useful calculators Multiple Regression-Given_Betas_and_Standard_Errors_find_Confidence_Interval_for_Prediction