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Which technique for sampling a guestroom containing 40 guests would most likely introduce a sampling error? aSelecting every 4th guest until 10 guests are selected bTaking the first 10 guests who volunteer for the sample cNumbering all the guests and using a random number generator to select 10 guests dPutting the guests into groups of male and female and randomly selecting 5 guests from each group

Sagot :

A sampling error is an error that is caused when the sample does not represent the entire population. To avoid sampling error a sample that is representative of the entire population must be chosen.

In option B, the randomness can be affected by the bias of the persons that are willing to participate. Therefore, the right answer is B.