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 ...

A z-test is statistical test used to determine whether two population means are different when the variances are known and the sample size is large. What Is a Z-Test? A z-test is a statistical test ...

Outliers may provide useful information about the development and manufacturing process. Analysts use various statistical methods to evaluate outliers and to reduce their impact on the analysis. This ...

Figure 1: Independent substitutions on a tree can create confounding covariations. Figure 2: Covariation analysis of known or proposed RNA secondary structures. Failure to identify significant ...

Nucleic acid sequencing methods, which determine the order of nucleotides in DNA, are rapidly progressing. These processes yield large quantities of sequence data that helps researchers understand ...

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 ...