Selected states P*i Pi Pg ygi ygi/P*i
Bornu 27/137 27/768 137/768 42 213.11
Benue 23/126 23/768 126/768 27 147.91
Edo 18/133 18/768 133/768 31 229.06
Taraba 16/101 16/768 101/768 71 448.19
Delta 25/113 25/768 113/768 47 212.44
Ogun 20/158 20/768 158/768 25 197.5
          1448.21
Table 3: Using eqn 2.1.1., the variance gives 690317.62 also using 2.2.1 the variance gives 102892.4.