An R Introduction to Statistics

interval estimate

Sampling Size of Population Proportion

A tutorial on computing the sampling size for the desired margin of error of population proportion estimate at given confidence level.

Sampling Size of Population Mean

A tutorial on computing the sampling size for the desired margin of error of population mean estimate at given confidence level.

Interval Estimate of Population Mean with Unknown Variance

A tutorial on computing the interval estimate of population mean at given confidence level. The variance of the population is assumed to be unknown.

Interval Estimate of Population Mean with Known Variance

A tutorial on computing the interval estimate of population mean at given confidence level. The variance of the population is assumed to be known.