The following table, contains beta coefficient estimates for six firms. Calculate the expected increase in the value of each firm's shares if the market portfolio were to increase by 10 percent. Perform the same calculation where the market drops by 10 percent. Which set of firms has the most variable or volatile stock returns?

Input the expected increase in the value of each firm's shares if the market portfolio were to increase by 10%.(Round each answer to two decimal places.)

\begin{tabular}{|l|c|c|} \hline \multicolumn{1}{|c|}{MicrosoftMoneyCentral(MSN.com)BetaEstimate} & Expected Increase \\ \hline \multicolumn{3}{|c|}{ Computers and Software } \\ \hline Apple Inc. (AAPL) & 2.66 & % \\ \hline Dell Inc. (DELL) & 1.81 & % \\ \hline Hewlett Packard (HPQ) & 1.49 & % \\ \hline \multicolumn{3}{|c|}{ Utilities } \\ \hline American Electric Power Co. (AEP) & 0.74 & % \\ \hline Duke Energy Corp. (DUK) & 0.49 & % \\ \hline Centerpoint Energy (CNP) & 0.82 & % \\ \hline \end{tabular}