A high school wanted to know what percent of its students smoke cigarettes. Duri

Question

A high school wanted to know what percent of its students smoke cigarettes. During the week when students visited the counselors to schedule classes, they asked every student in person if they smoked cigarettes or not. The data showed that less than 5% of students smoked cigarettes. 5) a) What is the most concerning source of bias in this scenario? Why? b) Which direction of bias (underestimate, overestimate) is more likely in this scenario? Give a detailed explanation for your answer. 3 14 View as Text

Explanation / Answer

(a) The most concerning source of bias in this scenerio: Non-secrecy of of the response to the questionaire in the census .

EXPLANATION: If really unbiased opinion onthe questionaire on students smoking cigeretteis to be obtained,it isa must that the response by each student is tobe confidential. Here, the student is made to answer this question before the consellors openly, for which the response willnot be correct one.

(b) The direction bias will be underestimate.

EXPLANATION: When the student is asked the question whether he smoked cigerette or not, natural response of the student will be "No" to get good impression about him to the councillor. So, it is underestimation.

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