Why is random sampling a good method to use for selecting items for study?
Answer to relevant QuestionsWhat can you gain by exploring data in addition to looking at summary results from an automated analysis? What are the three basic ways in which data sets can be classified? Table 2.6.4 is an excerpt from a salesperson’s database of customers. a. What is an elementary unit for this data set? b. What kind of data set is this: univariate, bivariate, or multivariate? c. Which of these variables ...What is the main problem with skewness? How can it be solved in many cases? Consider the 20,000 median household income values in the donations database (available at the companion site). These represent the median household income for the neighborhood of each potential donor in the database. a. ...
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