ap statistics - experiments & observational studies

timestamps

• 0:00

  Introduction and Overview

• 0:31

  Explanatory and Response Variables

• 1:03

  Purpose of Statistical Studies

• 1:34

  Surveys and Observational Studies

• 2:05

  Connecting Variables in Studies

• 3:06

  Explanatory Variable Control

• 3:37

  Response Variable Outcomes

• 4:08

  Check for Understanding Examples

• 5:09

  Connecting Explanatory to Response

• 5:39

  Practice Example: Track Coach

• 6:47

  Practice Example: Chef's Chicken

• 7:18

  Experiments vs Observational Studies

• 8:19

  No Interference in Observational

• 8:50

  Imposing Treatments in Experiments

• 9:22

  Identifying Study Types

• 10:24

  Chef Situation as Experiment

• 10:56

  Defining Treatments

• 11:59

  All-Nighter Scenario Introduction

• 13:02

  Identifying Variables in Scenario

• 14:10

  Explanatory Variable Details

• 15:10

  Study Type in Scenario

• 16:19

  Observational Study Justification

• 16:49

  Confounding Variables Explained

• 18:20

  Confounding Impact on Response

• 19:22

  Stress as Confounding Example

• 20:23

  Sample Response on Confounding

• 21:24

  Recap of Studies and Confounding

• 22:57

  Focus on Experiments

• 23:28

  Experimental Units Vocabulary

• 24:29

  Control Groups and Placebos

• 26:01

  Features of Well-Designed Experiments

• 27:02

  Comparison in Experiments

• 27:34

  Random Assignment Importance

• 28:37

  Replication in Experiments

• 29:10

  Blinding Techniques

• 30:12

  Key Experiment Terms List

• 30:43

  Fertilizer Experiment Example

• 32:27

  Identifying Units and Treatments

• 33:29

  Response Variable in Example

• 34:01

  Control Group Presence

• 35:03

  Blinding in Example

• 35:35

  Types of Experiments Introduction

• 36:06

  Completely Randomized Design

• 37:11

  Describing Random Assignment

• 38:13

  Randomized Block Design

• 39:15

  Blocking to Reduce Variability

• 40:17

  Common Blocking Variables

• 40:47

  Matched Pairs Design

• 41:49

  Matched Pairs Examples

• 42:51

  Recap of Experiment Types

• 43:22

  Conclusion and Thanks