Listed below is the selling price for a share of Oracle Inc. stock at the close of the year for 1990 through 2012.

a. Plot the data.
b. Determine the least squares trend equation. Use both the actual stock price and the logarithm of the price. Which seems to yield a more accurate forecast?
c. Using the equation with the logarithm of price, calculate the points for the years 1993 and 1998.
d. Using the equation with the logarithm of price, estimate the selling price in 2015. Does this seem like a reasonable estimate based on the historical data?
e. Using the equation with the logarithm of price, how much has the stock price increased or decreased (per year) on average during the period?

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Year Price Year 1990 0.1944 1996 1991 0.3580 1997 1992 0.7006 1998 1993 1.4197 1999 28.0156 2005 12.2 2011 26.33 1994 2.1790 2000 29.0625 2006 19.11 2012 34.08 1995 3.1389 2001 13.81 Price Price Price 4.6388 2002 10.80 2008 17.73 3.7188 200 13.23 2009 24.53 7.1875 2004 13.72 2010 31.30 Year Year 007 2023