ap statistics - normal distribution & z-scores

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• 0:00

  Importance of Normal Distribution

• 0:31

  Percentiles and Normal Curve

• 1:34

  Empirical Rule Explanation

• 2:36

  Checking for Outliers

• 3:39

  IQ Scores Example

• 4:42

  Standard Normal Curve

• 5:44

  Z-Scores Introduction

• 6:15

  Comparing ACT and SAT

• 7:48

  Interpreting Z-Scores

• 8:50

  Z-Score Formula

• 9:54

  Grades Comparison Example

• 12:35

  Determining Better Performance

• 13:37

  Calculating Probabilities

• 14:39

  Lego Weight Probability

• 17:21

  Using Z-Score Table

• 19:30

  Calculator NormalCDF Method

• 24:55

  Sampling Distributions Overview

• 26:27

  Proportions and Means Formulas

• 29:02

  Sampling Distribution Explanation

• 31:09

  Lego Sample Probability

• 34:20

  Standard Deviation in Sampling

• 37:37

  Voting Poll Proportions Example

• 39:41

  Probability Calculation for Proportions

• 40:43

  Normal Curve in Inference

• 42:16

  Balloons House Lifting Example

• 43:49

  Normal Condition Importance

• 45:23

  Study Randomization Issue

• 47:58

  P-Value Interpretation

• 49:33

  Rejecting Null Hypothesis

• 50:34

  Final Thoughts and Q&A