The T-Value is a common statistical calculation with a very wide range of applications. In the business world, it can help in making educated financial predictions and projections. For example, a ...

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 ...

The formula of Mean: In statistics, "mean" is a measure of central tendency, calculated by summing up all the values in a dataset and dividing by the number of data points. The single numerical value ...

This applet allows users to specify a hypothesized population proportion, sample proportion and sample size as well as an alternative hypothesis and significance level. After changing the values, the ...

JEFF: Putter's under pressure, Janine. He needs to turn this around quick. JANINE: He sure does, Jeff. Let's look at how the other player scored on this hole. JEFF: Let’s start with the ‘mean’ score.

This web calculator conducts a z-test for the difference between two populations' proportions. The calculator includes an explanation of inputs and outputs. This web calculator conducts a z-test for ...