With a probability sample there is always some sample error. Therefore, for example, it is more correct to say that there is "about 33% dissatisfaction in a population", versus that "33% of the population is dissatisfied" when reporting the sample finding to a client.

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This is because a probability sample only provides an estimate of the true population parameter and there is always some sample error involved due to the randomness of sampling. Therefore, it is more accurate to use phrases such as "about" or "approximately" when reporting sample findings to clients.

With a Probability Sample There Is Always Some Sample Error