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For more information, please see full course syllabus of Statistics
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Lecture Comments (4)

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Post by momo ben on August 24, 2013

thx for the video.
too bad that it s time consumming to wait for you writing .

2 answers

Last reply by: joshua zhang
Thu Dec 1, 2016 10:52 PM

Post by Steven Hou on May 9, 2013

What's the difference between a Random Sample and a SRS?

Planning and Conducting Surveys

  • Well designed and conducted surveys use chance, random samples, and have no sources of bias.

  • Population: Entire group of individuals about which we want info.

  • Sample: Part of the population from which we collect information.

  • Bias: Factor which can favor certain outcomes.

  • Sampling Methods include Simple Random Sampling (SRS), Stratified Random Sampling, and Cluster Sampling.

Planning and Conducting Surveys

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
  • Ideal Surveys 0:06
    • Random Selection
  • Characteristics of Surveys 0:42
    • Chance
    • Random Samples
    • No Source of Bias
  • Populations, Samples, Random Selection 2:21
    • Population
    • Sample
  • Sources of Bias 4:14
    • Example
  • Sampling Methods 7:27
    • Simple Random Sampling (SRS)
    • Example
    • Stratified Random Sampling (Strata)
    • Example
    • Cluster Sampling
    • Example