# Week 2 Practice Worksheet Provide a response to the.docx

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Week 2 Practice Worksheet Provide a response to the following prompts. 1. The Wilcox & Keselman (2003) article from this week’s electronic readings discusses two problems with measures of central tendency: skewness of the data and outliers. Discuss each of these issues and how they affect measures of central tendency. 2. How do the sample mean and the population mean differ? What is the symbol for each type of mean? 3. An expert reviews a sample of 10 scientific articles (
n = 10) and records the following numbers of error in each article: 0, 4, 2, 8, 2, 3, 1, 0, 5, and 7. a. Compute the mean, median, mode, sum of squares (SS), the variance, and the standard deviation for this sample using the definitional and computational formulas. You may use Microsoft® Excel® data anlysis to compute these statistics and copy your output into this worksheet. Explain, to a person who has never had a course in statistics what you have done. b. Note the ways in which the means and standard