r-project.org
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Official site for the R programming language. It provides downloadable R software, extensive documentation and manuals, tutorials, and links to CRAN packages and community resources for statistical analysis.
More resources on Statistical Analysis
Distill.pub
Interactive ML and stats articles
Cross Validated
Q&A site for statistics practitioners
Seeing Theory
Interactive visualizations for probability and stats
3Blue1Brown: Essence of Linear Algebra (stats relevant)
Visual intro to linear algebra crucial for stats
Statistical Inference
Statistical inference is the process of drawing conclusions about populations or scientific truths from data. There are many modes of performing inference including statistical modeling, data oriented strategies and explicit use of designs and randomization in analyses. Furthermore, there are broad theories (frequentists, Bayesian, likelihood, design based, …) and numerous complexities (missing data, observed and unobserved confounding, biases) for performing inference. A practitioner can often be left in a debilitating maze of techniques, philosophies and nuance. This course presents the fundamentals of inference in a practical approach for getting things done. After taking this course, students will understand the broad directions of statistical inference and use this information for making informed choices in analyzing data.
Introduction to Statistics
Learn the fundamentals of statistical analysis with Khan Academy's free "Introduction to Statistics" course. Start understanding data today!