Computer-Aided Personal Interviewing (CAPI)

: An interview that is administered through a computer-based survey. CAPI software can streamline the interview process.

Computer-Aided Self-Administered Interviewing (CASI)

: A computer-based survey that respondents usually complete at a central location after being recruited.

Computer-Aided Telephone Interviewing (CATI)

: Interviews that are conducted over the telephone between a consumer and a computer. CATI software will increase call center productivity.

Computer-Aided Web Interviewing (CAWI)

: A form of interviewing that is conducted over the Internet.

Concept Testing

: Gauging market responses, new ideas or their implementation.

Construct

: An idea that powers research, for example, hypotheses or concepts are considered constructs.

Contact Rate

: This is the amount of respondents reached for a survey that are responsible members of the household.

Continuous Variable

: A variable that has the potential to represent infinite numbers falling between a given interval. Continuous variables are usually used as part of a measuring process. Grade Point Averages are continuous variables (can exist anywhere between 0.0 and 4.0).

Convenience Sample

: A non-random sample that is collected based on those units that are made easily available to the researchers. There are no quotas or qualifications necessary for sample selection in a convenience sample.

Cost Per Interview (CPI)

: The euro value of completing an interview in a survey research project.
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