This example is taken from Lehtonen and Pahkinen’s Practical Methods for Design and Analysis of Complex Surveys.

pages 102 and 107, Table 3.14 Model-assisted estimation results for the population total of UE91 from an SRS sample of eight elements drawn from the Province’91 population.

The SAS data file for this example can be downloaded by clicking here. Note that a modification was made to this data set: a variable called

conswas added to the data set. The variableconsis equal to one for all cases. A text file containing the strata and poststratification totals can be downloaded by clicking here. A "movie" showing how to convert the data file to a WesVar data file can be viewed by clicking here. A "movie" showing how to analyze the data in WesVar can be viewed by clicking here.

In this example, the variable

wtis used as the weight variable, the variablecluis used as the VarUnit and the variablesue91andhou85are used as the analysis variables. The jackknife-1 (jk1) method of creating the replicate weights is used because we do not have stratification in this sample. Also, we will need to use an FPC of .75 (1 – (8/32) = .75).

The output (shown at the end of the analysis "movie") is given below.

The marginal ue91 value of 6610 is the estimated total of the variable

ue91, and its standard error is 3320.5647. The marginal hou85 value of 41238 is the estimated total of the variablehou85, and its standard error is 21824.6433. The marginal ratio value of 0.1603 is the estimated ratio of ue91/hou85, and its standard error is 0.0110.