Chapter 5- Marketing Reasearch Errors Flashcards
What is a non-sampling error?
All errors other than sampling error [cannot be quantified]
Total error=
Sampling error + non-sampling error
Sampling error=
The difference between a measure obtained for the sample and the true measure that can be obtained only from the entire research population
What is a sample?
A sample is defined as a subset of all the members of a population of interest
How can a researcher decrease sampling error?
Increase the size of the sample
What is a non-response error?
A failure on the part of a prospective for spa meant to take part in the survey or to answer specific questions on the questionnaire [can include refusals to participate, break offs, refusal to answer specific questions,respondent cannot be reached
What are the five types of research error?
Surrogate information error, population definition error, sampling frame error, measurement error, processing/data analysis error
Researcher errors: surrogate information error
An error formed by an inconsistency between the information sought by the researcher and the information that is needed to solve a problem
Researcher errors: population definition error
Defined as the variation between the actual population relevant to the problem at hand and the population selected or defined by the researcher
Researcher error: sampling frame error
A type of non-sampling error and a survey caused by a sampling frame that is not a perfect representation of the population are universe
Researcher errors: measurement error
The error that results from the difference between the information sought and the information actually obtained by the measurement process
Researcher errors: processing/data analysis error
Any mistake that results from incorrect transfer or omission of data, from the data collection phase of research project to the final statistical tables
What are the four types of interviewer errors?
Respondent selection error, questioning error, recording error, cheating error
Interviewer errors: respondent selection error
Error that results from incomplete or improper sampling procedures
Interviewer errors: Questioning error
This can include any improper delivery of questions by the researcher in a survey or focus group. Questioning error can mean unintentionally leading a respondent to a desired answer, wording a question in a confusing or misleading way, or even imbuing questions with the tone of voice that implies a certain answer is correct