4. Calculate the Standard deviation and Coefficient of Variation for the table below: Economy, Which Affects Demand Strong Normal Probability of this Demand Occurring 013 Rate of Return if This Demand Occurs 80% Deviation: Actual 10% Expected Return Squared Deviation x Prob Deviation Squared 0.4 10% Weak 0.3 -70% 1 Standard deviation expressed as a percentage = Coefficient of Variation