Not all stock market indexes are created equal. Different methods are used to calculate various indexes, and different

indexes will yield different assessments of "market performance." Using Finance Yahoo, retrieve the stock price for

five different firms on the first and last trading days of the previous month. finance.yahoo.com$-$Get a quote; then

click on Historical Data and specify a date range.

Data used: $($Table enclosed$)$

a$.$ Compute the monthly return on a price$-$weighted index of the five stocks.

b$.$ Compute the monthly return on a value$-$weighted index of the five stocks.

c$.$ Compare the two returns and explain their differences. Explain how you would interpret each measure.