Three sigma limits are used to set ... between the variation and the mean. A bell curve gets its name from its appearance: a symmetrical bell-shaped curve that rises in the middle. It illustrates ...

The empirical rule describes how points are clustered in a normally-distributed data set. It states that 95% of data fall ...

Forecasting for any small business involves guesswork. You know your business and its past performance, but you may not be comfortable predicting the future. Using Excel is a great way to perform what ...

Scientists at the University of California, San Diego (UCSD) have developed new insight into a formula that helped British cryptanalysts crack the German Enigma code in World War II. Scientists at the ...