data canpop;
  * From Fox, Applied Regression Analysis.;
  * Canadian Population Data ;
  * Sources of Data: Urquhart and Buckley, eds. (1965), ;
  * Historical Statistics of Canada, Toronto: Macmillan, p. 1369; 
  * Canada Year Book 1994, Ottawa: Statistics Canada, Table 3.2. ;
  input year pop ;
  * year = "Year";
  * pop  = "Population in millions";
cards;
1851	 2.436
1861	 3.230
1871	 3.689
1881	 4.325
1891	 4.833
1901	 5.371
1911	 7.207
1921	 8.788
1931	10.377
1941	11.507
1951	13.648
1961	17.780
1971	21.046
1981	23.774
1991	26.429
;
run;

proc means;
run;