Econ 221 Fall 2014 Quiz I + Ans - Economics Statistics I Fall 2014 Quiz I Name 1 Hunter College Department of Economics Chebychev's Theorem A applies to

# Econ 221 Fall 2014 Quiz I + Ans - Economics Statistics I...

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Economics Statistics I Hunter College Fall 2014 Quiz I Department of Economics Name _______________________ 09/23/2014 1 | P a g e 1.Chebychev's Theorem: A. applies to all samples.B. applies only to samples from a normal population.C. gives a narrower range of predictions than the Empirical Rule.D. is based on Sturges' Rule for data classification. The strength of Chebyshev's Theorem is that it makes no assumption about normality, while the E.R. only works for normal populations. 2.Which display is most likely to reveal association between Xand Y? A. Dot plotB. Scatter plotC. HistogramD. Pareto chart Scatter plots reveal covariance between X and Y .

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2 | P a g e 3."Bob must be rich. He's a lawyer, and lawyers make lots of money." This statement bestillustrates which fallacy? A. Using poor survey methodsB. Confusing significance with importanceC. Unconscious biasD. Generalizing from an average to an individual Many lawyers do not work for big firms (remember My Cousin Vinnie ?).

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