Chapter 5. Comparing two groups

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Do language learners who are taught by an innovative method show better results than those who are taught traditionally&#63; Do speakers of one language variety speak faster than speakers of another variety&#63; Do people of one gender use more hedging constructions than people of another&#63; In this chapter, you will learn how to make such comparisons using the parametric <i>t</i>-test and the non-parametric Wilcoxon and Mann-Whitney tests for dependent and independent samples. You will learn how to compute the standard error and confidence intervals for the mean. The case studies will involve differences between high- and low-frequency nouns with regard to the number of associations that they trigger and their abstractness/concreteness scores.


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