Find the regression equation for predicting daily takings from the number of sales staff in the table above. If an eleventh shop in the chain (with 21 sales staff) had been omitted from the dataset,...

Find the regression equation for predicting daily takings from the number of sales staff in the table above. If an eleventh shop in the chain (with 21 sales staff) had been omitted from the dataset, what would Shop 11’s daily takings score be?