'How large a sample do I need?' is one of the most commonly asked questions of a statistician. It is also one of the hardest questions to answer. The researcher posing the query usually believes, ...

What is a one sample t test? The t test is a commonly used hypothesis test in statistics that allows us to compare the mean value of a group of sampled data with some hypothesized value, usually a ...

Finite sample breakdown points are obtained for two classes of projection based multivariate location and scatter statistics: the Stahel-Donoho statistics and the Maronna-Yohai statistics. The ...

If no other sources are available to measure certain variables of a target population, Statistics Netherlands often uses a random sample, i.e. a sample of units from the population drawn in accordance ...

We present a simple sample-size formula for weighted log-rank statistics applied to clustered survival data with variable cluster sizes and arbitrary treatment assignments within clusters. This ...

The following sample plan of study fulfills the M.S. degree in Computational Operations Research, pending final approval from the State Council on Higher Education in Virginia, with an emphasis on ...

Microsoft Excel is a popular platform that consists of features, such as calculation, graphing tools, pivot tables, and a macro programming language known as Visual Basic for Application (VBA). Users ...