A bi-modal distribution has two modes. In other words, outcome of two processes with different distributions are combined in one set of data.
Z scores are the number of standard deviations a score or a value (x) away from the mean and are a measure of the dispersion of data.
Learn how to analyze your Six Sigma projects using financial measures. This will give you insight into the wider effects of your efforts.
Poisson distribution is a discrete probability distribution; it describes the mean number of events occurring in a fixed time interval.
The chi square (χ2) distribution is the best method to test a population variance against a known or assumed value of the population variance