By using a sample size calculator, you can figure out how many people is enough, ensuring confidence in your statistics.

Course TopicsPower 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 ...

The survey provides a sense of how the size of the population varies depending on one’s definition of who is a Jew. Use the checkboxes below to calculate the size of the U.S. Jewish population based ...