Which of the Following Is Recommended for a Researcher When

Multiple Choice

Which of the following is recommended for a researcher when analyzing the data obtained from a survey?

A) The researcher should check how closely the sample resembles the general population along a number of important dimensions.
B) Data in online surveys with participation rate lower than 30% should only be considered.
C) New sets of data need to be collected instead of using existing national data sets for research studies.
D) The researcher should filter out data from samples comparing respondents and nonrespondents.