Number of Household Widgets

Year Households Income Sold

1980 39.5 34,000 5,500

1981 39.8 34,600 5,600

1982 40.4 41,000 5,900

1983 43.1 38,000 5,800

1984 43.2 39,000 6,100

1985 44.0 42,000 6,900

1986 44.5 44,000 6,300

1987 46.2 49,000 7,300

1988 46.5 46,000 6,700

1989 46.8 51,000 6,900

1990 47.0 48,000 7,200

1991 47.1 47,000 7,100

1992 47.3 50,000 7,100

1993 47.7 51,000 7,400

1994 48.0 53,000 7,600

1995 48.1 54,000 7,900

1996 48.4 55,000 7,300

1997 48.5 53,000 8,000

1998 49.0 57,000 8,500

3. (A) perform a multiple regression analysis on the above data to see if household income and population can be used to predict future sales.(B) Predict sales for the next three years based on the income and population projections listed below.

(fill in the blanks below)

Year Income Population

1999 58,000 52.0

2000 62,000 52.1

2001 65,000 52.3