By Craig Lazarski, Cary Academy There are many concepts associated with hypothesis testing, but it all comes down to variation. How unusual is the variation we observe in a sample? Students can often lose sight of this basic idea once they have learned the various procedures introduced in an introductory statistics course. Further, they may blindly follow the procedure … [Read more...] about Developing the Theory of Hypothesis Testing: An Exploration
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Why 0.05? Two Examples That Put Students in the Role of Decision-Maker
By Leah Dorazio Any teacher of introductory statistics has heard this question more times than they can remember: “Why 0.05?” Here, the value 0.05 refers to the significance level in a hypothesis test. A nice overview of hypothesis tests is described in the Fall/Winter 2015 issue of STN. In this article, I provide a brief review of the concepts of hypothesis test and … [Read more...] about Why 0.05? Two Examples That Put Students in the Role of Decision-Maker