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Using the samplex package

# Load the package
library(samplex)

# Launch the Shiny app
samplex()

Overview

The samplex package offers an interactive Shiny application to calculate sample sizes under various survey designs.

It includes methods for:

Users can set parameters such as confidence level, margin of error, population variance, average cluster size, intra-cluster correlation, and fixed costs, and receive real-time sample size outputs.

Example use case: Cluster sampling for a proportion

Suppose a public health team wants to estimate the proportion of vaccinated students in rural schools.

The team can:

  1. Open the app using samplex().
  2. Go to the Cluster Sampling tab.
  3. Select “Proportion”, and choose:
    • Confidence level: 95%
    • Precision: 0.04
    • Estimated proportion: 0.8
    • Intra-cluster correlation (ICC): 0.01
    • Average cluster size: 100

The application will calculate the required sample size and number of clusters, and show formulas and summaries accordingly.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.