Equation 7-1 reads as follows: The variance of theta sub zero equals open curly brace 1 divided by open bracket G multiplied by open paren 1 minus k closed paren squared closed bracket closed curly brace multiplied by summation i from 1 to G of open bracket open paren theta sub i closed paren minus theta sub zero closed bracket squared where G equals number of replicates, the quantity 1 minus k equals the perturbation factor, the letter i equals replicate i from 1 to G, theta sub i equals the ith estimate of the parameter theta based on the observations included in the ith replicate, and theta sub zero equals the survey estimate of the parameter theta based on the full sample.