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

Random & Probability Sampling

Description:

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

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Tutorial

Source: Tree Sprinkles created from public domain http://openclipart.org/detail/2183/christmas-tree-icon-by-molumen-2183 Red dice, public domain http://www.clker.com/inc/svgedit/svg-editor.html?paramurl=/inc/clean.html?id=4389 Colored Circles created by J. Gearin

Notes on "Random & Probability Sampling"

Overview

(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


TERMS TO KNOW
  • 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