The following table gives data for real consumption expenditure, real income, real wealth, and real interest rates

Question:

The following table gives data for real consumption expenditure, real income, real wealth, and real interest rates for the U.S. for the years 1947€“2000.
a. Given the data in the table, estimate the linear consumption function using income, wealth, and interest rate. What is the fitted equation?
b. What do the estimated coefficients indicate about the variables€™ relationships to consumption expenditure?

Yd Wealth Year Interest Rate 1947 1948 1035.2 5166.8 -10.351 976.4 1090.0 998.1 5280.8 -4.720 5607.4 1949 1025.3 1095.6 Year Yd Wealth Interest Rate 1977 2992.1 3360.7 13786.3 -1.190 1978 3124.7 3527.5 14450.5 0.113 1979 3203.2 3628.6 15340