In this article, we will explore some of the theory behind the one sample t test, assumptions of the test, interpretation and a worked example.

A unified approach to large-sample statistical methods is provided via a quadratic approximation. Various methods of estimation obtained by minimizing (or maximizing) an objective function, and those ...

Further statistics in dentistry: The principles which underlie a well-designed clinical trial were introduced in a previous paper.1 The trial should be controlled (to ensure that the appropriate ...

Discover how the law of large numbers explains why larger samples lead to more accurate estimates of a population's true average.

Xiaofeng Liu, Statistical Power and Optimum Sample Allocation Ratio for Treatment and Control Having Unequal Costs Per Unit of Randomization, Journal of Educational and Behavioral Statistics, Vol. 28, ...

Excel enables users to perform statistical functions such as STDEV, which calculates standard deviation based on a sample. In statistics, a standard deviation is a measure of the amount of ...

The editor of RealClearMarkets, John Tamny, has a point. An important question to debate today should be: is the Bureau of ...