https://datatweets.com/courses/statistics/statistics-fundamentals/Recent content in Statistics Fundamentals on DATATWEETSHugoenCopyright (c) 2025 DatatweetsSat, 27 Jun 2026 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-1-populations-and-samples/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-1-populations-and-samples/Meet the most important distinction in statistics — population vs sample — and learn simple random, stratified, cluster, and systematic sampling, plus what sampling error means.https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-2-variables-and-measurement-scales/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-2-variables-and-measurement-scales/Sort variables into quantitative vs qualitative and discrete vs continuous, then meet the four measurement scales — nominal, ordinal, interval, ratio — and see why the scale decides which statistics are valid.https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-3-frequency-distributions/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-3-frequency-distributions/Learn to summarize a variable with frequency tables, relative and cumulative frequencies, grouped (binned) distributions of continuous data, and quartiles via quantile() and describe().https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-4-visualizing-distributions/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-4-visualizing-distributions/Use bar charts for categories and histograms for continuous data, see how bin width changes a histogram, and read shape — symmetry, skew, modality, and outliers — back into the mean and median.https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-5-comparing-distributions/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-5-comparing-distributions/Learn why raw counts mislead when group sizes differ, and how relative frequency, frequency polygons, and boxplots let you compare distributions across groups fairly.https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-6-guided-project-separating-penguin-species/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/statistics/statistics-fundamentals/lesson-6-guided-project-separating-penguin-species/The module capstone: with the species labels hidden, summarize and visualize penguin measurements, build a rule-of-thumb classifier from the distributions, and measure how often it is right.