Suppose you are conducting a survey regarding violence among teenagers

violenceamongteenagers in a school district

aschooldistrict. You obtain a cluster sample of 23

23 schools

schools within a school district

aschooldistrict and sample all sophomore students

sophomorestudents in the randomly selected schools

schools. The survey is administered by the teachers

teachers.

(a) Which of these best describes the bias in thesurvey?

Undercoverage bias

Nonresponse bias

Response bias

Sampling bias

(b) How can the bias beremedied?

A.

The survey should be administered to a randomsample, not a cluster sample.

B.

The survey should include a greater number of schools

schools.

C.

The survey should be administered by an impartial party.

D.

The survey should include the teachers