Following are three economic states, their likelihoods, and the potential returns: Determine the standard deviation of the expected return. (Do not round intermediate calculations and round your answer to 2 decimal places.) Standard deviation % You own $23,498 of Olympic Steel stock that has a beta of 3.08. You also own $16,020 of Rent-a-Center (beta = 1.74) and $13,884 of Lincoln Educational (beta = 0.84). Whet is the beta of your portfolio? (Do not round Intermediate calculation and round your answer to 2 decimal places.) Portfolio beta