Calculating the sample size for a simple random sample of a proportion is a crucial step in designing statistically valid surveys or experiments.

This Shiny app is designed to streamline the process of determining sample sizes for proportions in statistical studies

\[ n = \frac{z^2 \cdot p \cdot (1-p)}{E^2} \]

where:

• \(n\) is the sample size.
• \(z\) is the z-score corresponding to the desired confidence level.
• \(p\) is the estimated proportion.
• \(E\) is the margin of error.

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Change the Proportion(p), Marginal Error(e) and Confidence level (cl) then press Calculate for your sample size

Click the Below Link for the Application.

https://vp0d2b-cuong-pham.shinyapps.io/SampleSize/

Click the link below for compiled project files on github repo.

https://github.com/cuongphamv/DevelopingDataPro

THANK YOU