Question

Which of the following samples would constitute a biased sample?

Two thousand people were randomly surveyed about their favorite candy in four different cities in Arizona to determine Arizona’s favorite candy.

A tele-market research company randomly called and surveyed one thousand men and women over the age of 65 to determine which insurance companies were preferred in retirement.

Seventh grade girls were randomly surveyed to determine what theme the whole school would prefer for the dance.

Kids at a large preschool were randomly surveyed to determine the color most preschoolers like best at that school.

Answer 1

Among the given samples the sample which constitute a biased sample is given by, the sample obtained by,

'Surveying randomly among seventh grade girls of a school to determine what theme the whole school would prefer for the dance.'

Explanation:

Among the given samples the sample which constitute a biased sample is given by, the sample obtained by,

'Surveying randomly among seventh grade girls of a school to determine what theme the whole school would prefer for the dance.' since the choices of those seventh grade girls in the sample may not reflect those of the whole school.