MKTG 3100 Lecture Notes - Lecture 4: Confidence Interval, Sample Size Determination, Asics

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> the respondent to participate in the study. Example: leaving survey on table at restaurant. > the interviewer or technique chooses the respondent by a random process. Examples of probability samples: interviewer randomly selects person at a shopping mall, pop-up / overlay selects every 5th person who comes to a web page, telephone sampling using random digit. Sample size: managers need to know the accuracy of is the. Data accuracy large part, by in data. their determined, sample size. How is data accuracy reported: data accuracy is always calculated and reported in the same standardized way. is reported via a (cid:0) data accuracy. Ctv news election poll video: ctv contacted 1,500 people by telephone (via random digit dialing) and asked who they would vote for. Point estimate (cid:0) our best point estimate is that 42% of the population will vote for the. > however, point are sometimes not accurate due to small sample size.

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