A simple random sample is ... sure that all the formulas and inputs are correctly laid out. For simple random sampling to work, researchers must know the total population size.

In simple random sampling, each unit has an equal probability of selection, and sampling is without replacement. Without-replacement sampling means that a unit cannot be selected more than once. The ...

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After entering the two values and clicking the Enter key, the applet displays a set of indices giving a simple random sample dataset. This applet animates the random sampling of lotto balls. The ...