Confidence Interval Formulas Calculating a confidence interval by hand is slightly more complex. To determine a confidence interval, you'll need your sample's mean and margin of error: ...

Learn about calculating the mean, mode and range from a frequency table with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

In this KS2 Maths article you'll learn how to calculate a type of average called the mean. We also have KS2 videos, a quiz and lots of examples.

The geometric mean is the average of a set of products, the calculation of which is commonly used to determine the performance results of an investment or portfolio.

Using Excel is a great way to perform what-if analysis, and formulas generating random values that make sense for your forecasting help present a variety of outcomes for analysis.

For estimating the mean of a finite population using information on an auxiliary variable, a class of estimators is defined as a function of the ratio of sample mean to population mean and the ratio ...