Why was the development of cast-iron and steel-frame construction techniques significant to the growth of cities?  

You are comparing three firms over a period of several years. Firm A displayed average returns of 45% with a standard deviation of 15, Firm B displayed average returns of 50% with a standard deviation of 16.5, and Firm C displayed average returns of 47% with a standard deviation of 16. Which firm had greater variability in earnings based on the coefficient of variation?

While the Capital Market Line and Security Market Line are both fundamental to the Capital Asset Pricing Model, they differ fundamentally in:

Assume that the correlation coefficient were .5 instead of -.35. Would this increase or decrease the overall portfolio standard deviation (holding expected return and standard deviation and weighting of each fund constant from the previous question)?

Which requirements must be met for maintaining radiologic technologist certification with the American Registry of Radiologic Technologists (ARRT)?

You purchased 100 shares of Facebook for $75/share and the stock is currently worth $125/share. You are not ready to sell the stock yet, but you are concerned about maintaining your current position. If you wanted to ensure that your losses in the event of a decline in price were limited to about $10 a share, what type of order should you place?

  By the 1880s, most states had outlawed child labor.  

A portfolio has a standard deviation of 5.5 and the market has a standard deviation of 4.0. The correlation coefficient (R) between the portfolio and the market is .50. What percent of the total risk in the portfolio is unsystematic risk in this case?

  Was the sharecropping system successful? Why or why not?  

What implicit cost of investing has been greatly reduced in recent years due to changes in how stock prices are quoted (decimals versus fractions)?