This two-part activity provides an introduction to the basics of measurement (linear, mass, volume, density) and discusses the role of inferential statistics in comparing any two measurements. The concept of random variations in measurements is introduced, which leads to a discussion of binomial distributions and probability in comparing measurements and results. Students will use online databases to form null hypotheses and test them using an online t-test calculator. Links to datasets, an online statistical application, and to related sites are also provided. Educational levels: Undergraduate lower division, High school

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