Random & Probability Sampling
Common Core: 7.SP.1

Random & Probability Sampling


This lesson explains what random sampling is and why it's used.

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Introduction to Statistics

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Notes on "Random & Probability Sampling"


(0:00-1:13) Definition of Random and Examples

(1:13-2:07) Definition of Random Sample and Probability Sampling Plans

(2:07-2:58) Examples of Non-Random Samples and Non-Probability Sampling Plans

(2:58-3:13) Recap

  • Random Sample

    A sample that has been selected in a manner where every member of the population has some predetermined chance of being selected for the sample

  • Random Selection

    The method of obtaining a random sample

  • Probability Sampling Plan

    The way to collect a random sample that guarantees a certain likelihood for each member of the population to be selected