Statistics Ch 1 Exam - Questions and Answers A newspaper posted this question on its website: "How often do you seek medical information online?" Of 1072
... [Show More] Internet users who chose to respond, 38% of them responded with "frequently." What term is used to describe this type of survey in which the people surveyed consist of those who decided to respond? What is wrong with this type of sampling method? What term is used to describe this type of survey? Select all that apply. The respondents are a self-selected sample. The respondents are a voluntary response sample. Determine whether the source given below has the potential to create a bias in a statistical study. A certain medical organization tends to oppose the use of meat and dairy products in our diets, and that organization has received hundreds of thousands of dollars in funding from an animal rights foundation. There does appear to be a potential to create a bias. There is an incentive to produce results that are in line with the organization's creed and that of its funders Determine whether the source given below has the potential to create a bias in a statistical study. Washington University obtained word counts from the most popular novels of the past five years. There does not appear to be a potential to create a bias. The organization would not gain from putting a spin on the results. An article noted that chocolate is rich in flavonoids. The article reports that "regular consumption of foods rich in flavonoids may reduce the risk of coronary heart disease." The study received funding from a candy company and a chocolate manufacturers association. Identify and explain at least one source of bias in the study described. Then suggest how the bias might have been avoided. The researchers may have been more inclined to provide favorable results because funding was provided by a party with a definite interest. The bias could have been avoided if the researchers were not paid by the candy company and the chocolate manufacturers. Determine whether the sampling method described below appears to be sound or is flawed. In a survey of 517 subjects, each was asked how often he or she watched TV. The survey subjects were internet users who responded to a question that was posted on a news website. It is flawed because it is a voluntary response sample. Determine whether the sampling method described below appears to be sound or is flawed. In a survey of 511 human resource professionals, each was asked about the importance of the education of a job applicant. The survey subjects were randomly [Show Less]