By taking a systematic sample in which we select every 100th shopper arriving at a specific store, we are approximating a random sample of shoppers.

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By selecting every 100th shopper, we are introducing a level of systematic sampling, but because we are still selecting shoppers at random intervals, we are approximating a random sample. However, it is important to note that this method may introduce biases if there is any underlying pattern or trend in the arrival of shoppers at the store.

By Taking a Systematic Sample in Which We Select Every