Stat104_studyguide_part1_SOLUTIONSv34

# Stat104_studyguide_part1_SOLUTIONSv34 - Stat 104 :...

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Study Guide Solutions, Part 1 Stat 104 : Quantitative Methods for Economists

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Practice Problems 1) Describe the shape of the histogram: This histogram is bimodal; that means it has two distinctive peaks. It also might be called skewed to the right. 2) For the histogram pictured below, what proportion of the terms are less than 3.5? There are 25 items total, 11 of which are less than 3.5. So the answer is 11/25.

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6) If you are told that a data set has a sample mean of 25 and a sample variance of 0, you can conclude that: a. the data set is {-25,25} b. there are no observations in the data set c. all of the observations in the data set are 25 d. someone has made a mistake e. none of the above 7)
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## This note was uploaded on 03/27/2012 for the course STATS 104 taught by Professor Michaelparzen during the Fall '11 term at Harvard.

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Stat104_studyguide_part1_SOLUTIONSv34 - Stat 104 :...

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