Question

A newspaper posted this question on its​ web "How often do you seek medical information​ online?" Of 1072 Internet users who chose to​ respond, 38% of them responded with​ "frequently." What term is used to describe this type of survey in which the people surveyed consist of those who decided to​ respond? What is wrong with this type of sampling​ method? What term is used to describe this type of survey? Select all that apply.

A. The respondents are a census.
B. The respondents are a population.
C. The respondents are a voluntary response sample
D. The respondents are a self-selected sample.

Answer 1

D. The respondents are a self-selected sample.

Explanation:

Firstly, Let understand the meaning of Sample, it means we do a study on part of the whole population and population means every person is included in our study.

Option A. is incorrect because Census is an official count of members(here census is 1072 internet users)

Option B. is not correct because in Population every person include is survey (but here only 38% users take part in the survey)

Option C. is not true because the Voluntary response Sample is made up of volunteers.

Option D. is only correct as in Self Select Sample units themselves decide to participate in the sample or not( also here only 38% of users themselves decide to respond).