Sample OCP app that implements a Sample Size Calculator tool using the @zaiusinc/app-sdk. This app provides sample size calculations for A/B tests and experiments using the new Optimizely Stats Engine ...

confidence_level = st.selectbox("Confidence Level", options=["90%", "95%", "97%", "99%", "99.9%"], index=1) E = st.number_input("Margin of Error (E)", min_value=0.009 ...

What is stratified random sampling? Stratified random sampling is the technique of breaking the population of interest into groups (called strata) and selecting a random sample from within each of ...

The sample size calculator allows you to calculate the required responding sample size, standard error, RSE, and a confidence interval (95% or 99%) for a proportion estimate, using just one of these ...

Power analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required sample size for ...

Sample size, namely the number of subjects that should be included in a study to reach the desired endpoint and statistical power, is a fundamental concept of scientific research. Indeed, sample size ...