Sample Size Calculator

The sample size required to estimate a population mean with a certain level of confidence and a desired margin of error is…

The sample size required to estimate a population proportion with a certain level of confidence and a desired margin of error is…

Sturges’ Rule uses the following formula to determine the optimal number of bins to use in a histogram: Number of bins =…

A sampling distribution is a probability distribution of a certain statistic based on many random samples from a single population. This calculator…

A point estimate represents our “best guess” of a population parameter. For example, a sample mean can be used as a point…

The central limit theorem states that the sampling distribution of a sample mean is approximately normal if the sample size is large…