Problem: Tucson Machinery, Inc. manufactures numerically controlled machines, which sell for an average price of $0.50 million each. Sales for these NCMs for the past two years were as follows:
Quarter Quantity Quarter Quantity
I 12 I 16
II 18 II 24
III 26 III 28
IV 16 IV 18
a. Calculate regression equation
b. Forecast sale for the year 2000 and 2001