In order to test a hypothesis in traditional (“frequentist”) statistics, you posit an alternative called the “null hypothesis”. The null hypothesis should be chosen so as to represent the default ...

It may be common knowledge that p < .05 indicates statistical significance. Psychology students (and others) are often taught that p < .05 means the probability (p) of rejecting the null hypothesis ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

1. You are doing some research and have collected some data from a sample of people who were randomly selected from a population in which you are interested. You have ...

Understanding the basics of statistics can be quite challenging. One of the problems with statistical analysis is the manner in which it is presented, which is often rather disjointed. This series of ...

Central to the theme of hypothesis testing is the P-value, which is often misunderstood or misinterpreted. While it is often stated as the probability of the data having arisen by chance, the P-value ...

Suggested Citation: "Appendix D: Using Bayes Analysis for Hypothesis Testing." National Academies of Sciences, Engineering, and Medicine. 2019. Reproducibility and ...

Confidence intervals are computed from a random sample and therefore they are also random. The long run behavior of a 95% confidence interval is such that we’d expect 95% of the confidence intervals ...