Science is all about interrogating and disproving theories. Scientists in most quantitative fields will conduct p value testing as a method of statistical investigation. A low p value is an indicator ...

A one-tailed test in statistics is used to determine if a sample ... and the null hypothesis is rejected. Following our example above, if the p-value = 0.03, or 3%, then the analyst can be 97% ...

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 ...