Statistics

Lessons

1. 1 Descriptive vs Inferential Statistics: The DifferenceLesson 1 companion 3:20
2. 2 Mean, Median, Mode: Which Average Should You Use?Lesson 2 companion 3:59
3. 3 What Is Standard Deviation? (Explained Simply)Lesson 3 companion 4:01
4. 4 How to Read Histograms, Box Plots, and Bar ChartsLesson 4 companion 3:49
5. 5 The 68-95-99.7 Rule (Normal Distribution Explained)Lesson 5 companion 3:49
6. 6 What Does Margin of Error Mean in a Poll?Lesson 6 companion 3:41

Center Extras

1. 7 How to Find the Median: Odd and Even CasesCenter Extras 3:49
2. 8 What Is the Mode? One Mode, Two Modes, No ModeCenter Extras 3:44
3. 9 The Mean Formula Explained: x-bar = Sigma x over nCenter Extras 4:00
4. 10 Skewed vs Symmetric Distributions: Left and Right Skew ExplainedCenter Extras 3:38

Normal Curve Extras

1. 11 Where the Bell Curve Comes FromNormal Curve Extras 3:32
2. 12 What Is a Z-Score? (Standard Deviations Made Simple)Normal Curve Extras 3:22
3. 13 Empirical Rule Practice: Percent Above, Below, and BetweenNormal Curve Extras 3:51

Inference Extras

1. 14 Sample vs Population: x-bar vs mu, s vs sigmaInference Extras 3:53
2. 15 Sampling Bias Explained: Why How You Ask Beats How ManyInference Extras 3:44

Spread Extras

1. 16 What Do Percentiles Mean? (90th Percentile Explained)Spread Extras 3:42
2. 17 Quartiles and the Five-Number Summary ExplainedSpread Extras 3:42
3. 18 Outliers and the 1.5 IQR Rule ExplainedSpread Extras 3:52

Data Basics Extras

1. 19 Types of Data: Qualitative vs Quantitative, Discrete vs ContinuousData Basics Extras 3:55
2. 20 Frequency Tables Explained (Raw Data to Histogram)Data Basics Extras 3:42