If a sample is selected at random, the main reason that the sample mean, , might be different than the corresponding population mean, , is that the sample might be biased.

Question

If a sample is selected at random, the main reason that the sample mean,  , might be different than the corresponding population mean,  , is that the sample might be biased.

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The Answer of If a sample is selected at random, the main reason that the sample mean,  , might be different than the corresponding population mean,  , is that the sample might be biased.

If a Sample Is Selected at Random, the Main Reason