There are too many equations to memorize, but a helpful trick will make it easier. When you start with the confidence interval equation, the video walks through how to solve it and create the sample size equation.

Concepts

sample size, proportions, algebraic equations

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Additional Tags

math

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Instructional Ideas

• Use with the previous video in the series for a review of how to solve algebraic equations
• The video would work well as homework in a flipped classroom

Classroom Considerations

• Expects prior knowledge of algebraic equations
• The final video in a six-part series on sample size equations

• This video is hosted on YouTube

Pros

• Provides step-by-step instructions

Cons

• Does not explain how to solve for sample size, just how to solve to find the equation

Common Core

HSA-REI.A.1