The following table gives data on monthly changes in the spot price and the futures price for a certain commodity. Use the data to calculate a minimum variance hedge ratio +0.79 Spot Price Change Futures Price Change+0.56 +0.50 +0.61 -0.22 -0.35 +0.63 +0.60 -0.12 0.44 -0.51 Spot Price Change Futures Price Change-0.06 +0.04 +0.15 +0.70 -0.41 +0.80 -0.46 +0.01 -0.56 The following table gives data on monthly changes in the spot price and the futures price for a certain commodity. Use the data to calculate a minimum variance hedge ratio +0.79 Spot Price Change Futures Price Change+0.56 +0.50 +0.61 -0.22 -0.35 +0.63 +0.60 -0.12 0.44 -0.51 Spot Price Change Futures Price Change-0.06 +0.04 +0.15 +0.70 -0.41 +0.80 -0.46 +0.01 -0.56