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

Random & Probability Sampling

Author: Ryan Backman

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

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Introduction to Statistics

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Random and Probability Sampling

Notes on "Random and Probability Sampling"


(0:00-0:34) Definition of Random Sampling

(0:35-1:33) Discussion of Haphazard vs. Random Sampling

(1:34-2:00) Definition of Probability Sampling Plan

(2:01-2:59) 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