Exploration and description /Estimation

Scenario 1

These results are then used to calculate an estimate of the size of the population of cattle in the four sampled sub-regions using the formula shown earlier:

      Ti = Mi and s.e. (Ti) = √Si2 = √Mi(Mi-mi)si 2 / mi (i = 1... 4)

     

    Lobamba (with 4 of 13 dip-tank areas sampled)

    Buhlungu

    Ezulwini

    Luphahlane

    Mhlambanyatsi

        22.4

    19.3

    6.9

           13.6

    s.e. of

    8.8

    6.9

    1.9

    2.1

    mi

    5

    6

    8

    7

    Mi

    105

    126

    147

    126

             

    Ti (± s.e.)

    2,352±904

    2,436±851

    1,011±269

    1,710 ± 253

The calculations are shown in the first part of the worksheet spreadsheet `Cat_no_pop_inf' of  CS12Data1.