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Probability & Statistics · Statistics

Descriptive Statistics

Summarizing data honestly: mean, median and mode, spread (range, IQR, variance, standard deviation), skew and outliers, percentiles and z-scores, with worked salary and test-score examples.

30 min · 5 steps · videoJump to quiz ↓
Mean, Median, and Mode: Measures of Central Tendency: Crash Course Statistics #3 CrashCourse · 11 min
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Step 1 of 5 · Overview30 min read ·
Key idea
Prereqs: Arithmetic and averages. Next: Sampling & the central limit theorem; confidence intervals. Sources: OpenStax *Introductory Statistics* ch. 2; Crash Course Statistics #3–4.
Next: 1. Center

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