In outlier hypothesis testing, one aims to detect outlying sequences among a given set of sequences, where most sequences are generated i.i.d. from a nominal distribution while outlying sequences ...

In this adapted excerpt from his new book “Doctored: Fraud, Arrogance, and Tragedy in the Quest to Cure Alzheimer’s,” Charles Piller looks how the amyloid hypothesis took over Alzheimer’s ...

What is hypothesis testing? Hypothesis testing is a process in which an analyst makes inferences or calculated guesses about a specific parameter. Based on the nature of the data and reason for ...

Here is a simple example: A school principal reports that students in their school score an average of 7 out of 10 in exams. To test this “hypothesis,” we record marks of say 30 students ...

The t-test is almost always used in practice, because the z-test can only be performed if the population’s standard deviation is known 1. However, we’ll explain the z-test as well because it is highly ...

Hypothesis testing refers to the use of a systematic process to determine whether data and research studies can support our specific theory that pertains to a population. We accomplish this by ...