Sample Size for Estimating a Proportion

Determining an appropriate sample size is an important consideration in planning any survey or scientific study. In this video, we’ll consider how large of a sample is necessary in order to estimate a proportion within a desired margin of error.

Stream the video without the embedded quiz questions by clicking on the video link below. Closed captions are available.

Notes on the video: Sample Size for Estimating a Proportion

A point to consider for this video:

This video refers to City of Toronto polls, carried out early in the term of Mayor Rob Ford, before some controversies overshadowed his term.