Assume that respondents aged 70 or older are only one-third as likely to be in an Internet sample as their actual incidence in the population. Using the propensity scoring method, their responses would be:
A) excluded from the sample to avoid any potential bias.
B) included as is (only once) to keep the data truly representative.
C) counted three times in the sample.
D) included selectively (about one-third of the time) in the sample.
E) included alternatively.

Question

Quizplus · Accepted Answer

Propensity scoring method involves weighting observations based on a score that represents how likely they are to be included in the sample. In this case, since respondents aged 70 or older are only one-third as likely to be in the Internet sample as their actual incidence in the population, their responses would be counted three times in the sample. This would help adjust for the potential bias and make the sample more representative of the population.

Assume That Respondents Aged 70 or Older Are Only One-Third