120PM13A

# 120PM13A - Midterm 1 Practice Problems Answer Key...

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Midterm 1 Practice Problems Answer Key - Econometrics 120A 1. The following are the results of the ﬁrst six football games of USC (University of Southern California) this season: Game Score Outcome USC - Idaho 38-10 Win USC - Nebraska 49-31 Win USC - Washington State 47-14 Win USC - Washington 27-24 Win USC - Stanford 23-24 Loss USC - Arizona 20-13 Win (a) What is the average number of points scored by USC? This is just (38 + 49 + 47 + 27 + 23 + 20) / 6 = 34. (b) What is the median number of points scored by USC? The median is the third smallest observation, in this case 27. Any number between 27 and 38 is acceptable though. (c) What do the answers to a) and b) suggest about the distribution of points scored by USC? There might be a slight skew to the right as the mean is just larger than the median. This may depend on how you calculated the median, however, as 34 is an acceptable answer for b). (d) The standard deviation of points scored by USC is 12.46. What would the standard deviation

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## This note was uploaded on 12/05/2010 for the course ECON 120A taught by Professor M.abajian during the Spring '10 term at San Diego.

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120PM13A - Midterm 1 Practice Problems Answer Key...

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