# x22.txt # # Reference: # # Helmut Spaeth, # Mathematical Algorithms for Linear Regression, # Academic Press, 1991, # ISBN 0-12-656460-4. # # S Weisberg, # Applied Linear Regression, # Wiley, 1980, page 70. # # Discussion: # # Economic and employment data were recorded. # # The data include: # # I, the index; # A0, 1; # A1, the percentage price deflation; # A2, the GNP in millions of dollars; # A3, the number of unemployed in thousands; # A4, the number of people employed by the military; # A5, the number of people over 14; # A6, the year # B, the number of people employed. # # We seek a model of the form: # # B = A0 * X0 + A1 * X1 + A2 * X2 + A3 * X3 + A4 * X4 + A5 * X5 + A6 * X6. # 9 columns 16 rows Index A0, 1 A1, the percentage price deflation; A2, the GNP in millions of dollars; A3, the number of unemployed in thousands; A4, the number of people employed by the military; A5, the number of people over 14; A6, the year B, the number of people employed 1 1 83.0 234289 2356 1590 107608 1947 60323 2 1 88.5 259426 2326 1456 108632 1948 61122 3 1 88.2 258054 3682 1616 109773 1949 60171 4 1 89.5 284599 3351 1650 110929 1950 61187 5 1 96.2 328975 2099 3099 112075 1951 63221 6 1 98.1 346999 1932 3594 113270 1952 63639 7 1 99.0 365385 1870 3547 115094 1953 64989 8 1 100.0 363112 3578 3350 116219 1954 63761 9 1 101.2 397469 2904 3048 117388 1955 66019 10 1 104.6 419180 2822 2857 118734 1956 67857 11 1 108.4 442769 2936 2798 120445 1957 68169 12 1 110.8 444546 4681 2637 121950 1958 66513 13 1 112.6 482704 3813 2552 123366 1959 68655 14 1 114.2 502601 3931 2514 125368 1960 69564 15 1 115.7 518173 4806 2572 127852 1961 69331 16 1 116.9 554894 4007 2827 130081 1962 70561