# hw2 - Homework 2 Due July 7th PSYC 60 Introduction to...

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Homework 2 – Due July 7 th PSYC 60 – Introduction to Statistics, Summer Session 1, 2010 1. The data sets below show how well stock brokers are going to perform at 3 different companies (this data is from a reliable psychic). Data on 5 stock brokers from each company were collected. Each number represents the percent growth that the stocker broker will achieve. (Example. “3” means a 3% growth, so \$100 invested with that broker would lead to \$103. “-8” means 8% loss, so \$100 invested with that broker would lead to \$92.) Merit Traders: 3 4 5 4 5 Excelsior Capital: 3 4 5 -28 37 Equity Partners: -8 -2 9 3 19 A. Calculate the mean and standard deviation for each company. You do not need to show formulas or work for this question. Treat these datasets as POPULATIONS. B. Imagine you are going to select one company and be assigned a random broker. You don’t need to make a lot of money this year, but you have to avoid losing any money. If you only knew mean and standard deviation but not individual values, which company

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## hw2 - Homework 2 Due July 7th PSYC 60 Introduction to...

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