Transcription of Comparing One or Two Means Using the t-Test
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Comparing One or Two Means Using the t-Test
3 Comparing One or TwoMeans Using the t-TestThe bread and butter of statistical data analysis is the Student s was named after a statistician who called himself Student but whosereal name was William Gossett. As an employee of Guinness Brewery inDublin, Ireland, he tackled a number of practical statistical problems relatedto the operation of the brewery. Since he was discouraged from publishingunder his own name, he adopted the Student of Gossett s work, today s researchers have in their toolbox whatis probably the most commonly performed statistical procedure, the most typical use of this test is to compare Means , which is the focus ofthe discussion in this chapter. Unfortunately, because this test is easy to use,it is also easily this chapter, you will learn when, why, and how to appropriately per-form a t-Test and how to present your results. There are three types of t-teststhat will be discussed in this chapter.
given that illustrate how to perform these three types of t-tests using SPSS software. The first type of t-test considered is the simplest. One-Sample t-Test The one-sample t-test is used for comparing sample results with a known value. Specifically, in this type of test, a single sample is collected, and the
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