Does Education Pay The scatter diagram drawn in MINITAB shows the relation between the

Chapter 4, Problem 15

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Does Education Pay? The scatter diagram drawn in MINITAB shows the relation between the percentage of the population of a state plus Washington, DC, that has at least a bachelors degreeand the median income (in dollars) of the state for 2009. Source:U.S. Census Bureau(a) Describe any relation that exists between level of educationand median income.(b) One observation appears to stick out from the rest. Whichone? This particular observation is for Washington, DC. Canyou think of any reasons why Washington, DC, might have ahigh percentage of residents with a bachelors degree, but alower than expected median income?(c) The correlation coefficient between the percentage of thepopulation with a bachelors degree and median incomewith Washington, DC, included in the data set is 0.718. Thecorrelation coefficient without Washington, DC, includedis 0.802. What property does this illustrate about the linearcorrelation coefficient?

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