ap biology - chi-square analysis & practice problems

timestamps

• 0:00

  Introduction to Chi-Square

• 1:01

  Purpose in Genetics

• 2:03

  Equations Overview

• 3:05

  Key Vocabulary

• 4:09

  Null Hypothesis

• 5:10

  Degrees of Freedom

• 6:13

  Critical Value Explanation

• 7:48

  Rejecting Null Hypothesis

• 8:51

  Remembering with Analogy

• 10:26

  Alternative Thinking Method

• 12:01

  Practice Problems Start

• 13:04

  Guinea Pig Punnett Square

• 14:05

  Phenotypes and Freedom

• 15:38

  Expected Values Calculation

• 17:13

  Null Hypothesis Setup

• 18:16

  Formula Application Steps

• 20:24

  Summing Chi-Square

• 21:56

  P-Value and Confidence

• 23:28

  Reject Null Conclusion

• 25:01

  Cat Cross Example

• 26:34

  Observed Cat Data

• 28:08

  Cat Calculations

• 30:16

  Accept Null for Cats

• 31:19

  Wolf Dihybrid Cross

• 33:21

  Wolf Punnett Results

• 34:56

  Wolf Observed Values

• 36:31

  Wolf Chi-Square

• 37:03

  Reject Null for Wolves

• 38:06

  Beetle Traits Setup

• 39:08

  F2 Generation Ratio

• 40:10

  Beetle Expected Values

• 41:43

  Beetle Chi-Square

• 42:16

  Accept Null for Beetles

• 42:46

  Session Wrap-Up

• 43:17

  Final Thoughts