Question 1184106
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Amy invested in three companies: 1300 dollars for Apple, 1800 dollars for Google and 1900 dollars for Starbucks. 
Over the course of one year, she found that Apple went down 2 percent, Google went up 3 percent and Starbucks 
went up 1 percent. What is the average change in her portfolio?
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As the question is worded, &nbsp;it has a few sense &nbsp;(if any) &nbsp;<U>without a proper definition of the notion &nbsp;"average change"</U>.


Much more meaningful is the question



    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;What is the overall change in her portfolio ?



And the answer to this fixed question is


    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;overall change = -0.02*1300 + 0.03*1800 + 0.01*1900  dollars.


You can make your calc.