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For more information, please see full course syllabus of AP Statistics
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Normal Random Variables

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Objectives 0:08
  • The Empirical Rule 0:28
    • 68%
    • 95%
    • 99.70%
  • The Empirical Rule, Cont. 2:31
    • The Empirical Rule, Cont.
  • Example I: The Empirical Rule 3:24
  • Z-Score 8:17
    • Z-Score
  • Example II: Z-Score 10:08
  • Using the Normal Table 13:03
    • Using the Normal Table
    • Using the Normal Table, Cont.
  • Example III: Using the Normal Table and Z-score to Calculate Probability 16:01
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Probability Using the Normal Table
  • Example IV: Using the Normal Table and Z-score to Calculate Probability 20:29
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Probability Using the Normal Table
  • Example V: Using the Normal Table and Z-score to Calculate Probability 27:20
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Probability Using the Normal Table
  • Example VI: Using the Normal Table and Z-score to Calculate Probability 34:00
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Probability Using the Normal Table
  • Example VII: Using the Normal Table and Z-score to Calculate Probability 41:21
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Probability Using the Normal Table
  • Example VIII: Calculate the Standard Deviation of the Random Normal Variable 49:54
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Standard Deviation
  • Example VIII: Calculate the Mean of the Distribution 55:11
    • Step 1: Sketch
    • Step 2: Calculate Z-score
    • Step 3: Solve for Mean