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statistics

Statistical methods, analysis, and modeling techniques

ProgrammingZ-Score Standardization for Polynomial Terms in GLMMs

Learn how to properly standardize polynomial terms in GLMMs for comparable estimates. Includes R code examples and best practices.

3 answers• 1 view
CareerCareer Field Alignment: Statistics & Transition Timelines

Discover what percentage of professionals work in their studied field, common reasons for career changes, and typical transition timelines after graduation.

5 answers• 2 views
ProgrammingResolving ggplot2 and ggfortify Deprecation Warnings in R

Learn how to resolve ggplot2 and ggfortify deprecation warnings for residual plots in R. Updated syntax for aes_string(), fortify(), and size aesthetics.

6 answers• 3 views
ProgrammingZ-Score Deviation in Small Samples: Is -0.07 Significant?

Learn to calculate z-score for measuring a number's deviation from a small set like [27,43,17,5] with x=22. Is -0.07 significant or negligible? JS code review, interpretation thresholds, small sample challenges, and z vs t-test.

1 answer• 4 views
ProgrammingOverlay Two Probability Density Functions in R

Learn how to plot two normal probability density functions on a single graph in R using lines(), par(new = TRUE), or ggplot2 for a clean overlay and add legends.

1 answer• 4 views