Sales 20. An analyst must decide between two different forecasting techniques for weekly sales of roller blades a linear trend equation and the naive approach. The lincar trend equation is = 124 + 2t, and it was developed using data from periods I through 10. Based on data for periods 11 through 20 as shown in the table, which of these two methods has the greater accuracy if MAD and MSE are used? t 11 Units Sold 147 148 12 13 151 14 15 145 155 152 16 17 155 18 157 19 160 20 165