Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Read on to learn more about what a t-test is, the different formulas used, and when to apply each type to compare means and ...

Some existing nonparametric two-sample tests for equality of multivariate distributions perform unsatisfactorily when the two sample sizes are unbalanced. In particular, the power of these tests tends ...

Three different testing procedures which involve a minimum of modification of the usual single sample tests of the hypotheses considered are given here. Tests are made by taking samples at two stages ...

Many ASTM standards encompass the determination of the flash point of petroleum and petroleum products. ASTM D 93A is a key technique for the specification of diesel and aviation turbine fuels. First, ...