The owner of a shopping mall wishes to expand the number of shops available in the food court. He has a market researcher survey the first 100 customers who come into the food court during weekend afternoons to determine what types of food the shoppers would like to see added to the food court. Complete parts (a) and (b) below. (a) The survey has bias. Determine whether the flaw is due to the sampling method or the survey itself. For biased surveys, identify the cause of the error. What is the cause of the bias? A. Response bias B. Sampling bias C. Nonresponse (b) Suggest a remedy to the problem. Which of the following is the best way to remedy this problem? A. Reword the question so that it is balanced. B. Increase the sample size so that more people respond to the question. C. Ask customers throughout the day on both weekdays and weekends.
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The bias in this survey is due to sampling bias, as the researcher is only surveying the first 100 customers who come into the food court during weekend afternoons. Show moreā¦
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Scenario 1: Survey Questions & Bias At a certain university, students who live in the dormitories eat at a common dining hall. Recently, some students have been complaining about the quality of the food served there. The dining hall manager decided to do a survey to estimate the proportion of students living in the dormitories who think that the quality of the food should be improved. One evening, the manager asked the first 100 students entering the dining hall to answer the following question. Survey Question Many students believe that the food served in the dining hall needs improvement. Do you think that the quality of food served here needs improvement, even though that would increase the cost of the meal plan? ____ Yes ____ No ____ No opinion 1. In the following setting, explain what type of sampling technique was used and how bias may have been introduced based on the way the sample was selected. Then: - Suggest how the sample could have been selected differently to avoid that bias. - Suggest how it could have been worded differently to avoid any wording bias.
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