This chapter of the NIST Engineering Statistics handbook presents techniques for monitoring and controlling processes and signaling when corrective actions are necessary. It contains an introduction to process control, a...

This random number service allows users to generate up to ten-thousand random integers with duplicates, randomized sequences without duplicates, or up to sixteen kilobytes of raw random bytes. Users can also flip...

This website, created Richard Lowry of Vassar College, allows the user to provide two independent samples of sizes n_a and n_b, this page will estimate the significance of the difference between the means of the samples,...

This site provides resources to assist students in understanding introductory statistics. Multimedia instruction, demonstrations, case studies and an analysis lab are provided. Topics covered include analysis of...

This applet simulates sampling from a population with a mean of 50 and a standard deviation of 10. For each sample, the 95% and 99% confidence intervals on the mean are computed based on the sample mean and sample...