OzTAM's audience estimates are based on a sample and hence are subject to sampling variance. That is, the extent to which audience estimates vary when obtained with a sample, as opposed to those based on the entire population.

OzTAM's Sampling Variance Calculator will assist users in assessing the sampling variance of audience estimates based on single minutes, 1/4 hours and half hour averages.

SAMPLING VARIANCE CALCULATOR

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The Sampling Variance Calculator is available to subscribers only.
If you would like to subscribe please contact us.