$2.$ Use the Excel file Data for Two Stocks to determine the following:

a$.$ Using EXCEL's Data Table Feature, create a one$-$way data table that determines the different means and standard deviations for portfolios consisting of combinations of Stock A and Stock B by varying the correlation coefficient value between Stock A and Stock B through the full range of possible correlation coefficient values. Use increments of $0\mathrm{.}10$ for the possible correlation coefficient values.

b$.$ Graph the correlation coefficients, the means, and the standard deviations of the portfolios from the one$-$way data table. Be sure to include a title for the graph and label the axes.

c$.$ Use Excel's Text Box Feature to explain how the portfolio means are affected by changing the correlation coefficient values.

d$.$ Use Excel's Text Box Feature to explain how the portfolio standard deviations are affected by changing the correlation coefficient values.