17 Review of Univariate and Bivariate Inference

Overview

Research Context

One Variable at a Time

Life Expectancy by Income Group

Checking Assumptions

Conducting an ANOVA

Life Expectancy by GDP Per Capita

Summing Up

Overview

The unifying thread connecting Chapters 10 through 16 has been statistical inference, or, how do we assess and manage the risks of drawing conclusions based on limited probabilistic samples? Before moving on to the final portion of the book where we continue with further topics in the practice of inference, we pause again to review the fundamental concepts, assumptions, and techniques of conventional inference methods. As in the earlier review chapters, we’ll use the World Development Indicators (WDI) data for our investigations. ...

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