Discover how simple random sampling ensures accurate and unbiased population research, offering efficiency and fairness over ...

The aim of this paper is to provide an overview of sample size estimations for the most frequent type of group studies that result in continuous, binary and ordered categorical outcomes. In recent ...

Low statistical power undermines the purpose of scientific research; it reduces the chance of detecting a true effect. Perhaps less intuitively, low power also reduces the likelihood that a ...

The probability that the null hypothesis will be rejected when it is actually true is called the false positive rate and is determined by the significance level of the test (called alpha which is ...

Key points Listing outcomes to find the probability of combined events Examples Questions Using sample space diagrams to find the probability of combined events Examples Question Taking a logical and ...

The discovery of 3I/ATLAS, only the third confirmed interstellar object ever observed passing through our Solar System, is already reshaping how astronomers model the properties of objects arriving ...

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 ...

When particles in a sample are the same size, one particle can be measured to report the result. If the sample has a narrow distribution, such as 10-25 µm, then measurement of just a few particles can ...