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Unit 1 Milestone Statistics Fundamentals,100% CORRECT

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Statistics Fundamentals Unit 1 Milestone You passed this Milestone 28 questions were answered correctly. 1 question was answered incorrectly. 1 Researchers want to test the effects of a new weigh ... t loss program. They believe that gender is a significant factor. The participants are divided by gender. Then, within each group, participants are randomly assigned to either the treatment or control group. Which of the following would be the most effective to test the effects of the new weight loss program?  A matched-pair design experiment  A completely randomized design experiment  A randomized block design experiment  A longitudinal observational study RATIONALE Since people are first put into gender and then are assigned treatment or control randomly this is called a randomized block design. CONCEPT Randomized Block Design 2 It’s Saturday afternoon, and Denise is going shopping. She stops by a department store because she needs a new pair of shoes. She has picked out three styles that she likes. The store associate asks, “What is your shoe size?” Which type of question has the store associate asked?  Closed and binomial question  Closed question  Open question  Open and binomial question RATIONALE Recall a closed question has only a limited number of responses. Since she can only answer with her shoe size, this would be a closed question. CONCEPT Question Types 3 In a study to assess the risk of obesity with the amount of time exercised per week, researchers matched each patient, in a sample of 500 people who are obese, with a person of the same ethnicity, gender, and age (along with other similar characteristics) who is not obese. The researchers asked the patients and their matches a series of questions, and then tracked eating and exercise habits regularly for several years. Which type of statistical study are the researchers conducting?  Retrospective study  Designed experiment  Case-control study  Prospective study RATIONALE Since the study collected information on people over several years moving forward, it is a prospective study design. CONCEPT Prospective and Retrospective Studies 4 A factory manufactures motorcycles. One of its employees, working in the quality control department, checks the first 10 and the last 10 motorcycles manufactured in a day. This is what type of sampling?  Stratified sampling  Convenience sampling  Voluntary response sampling  Systematic sampling RATIONALE Recall that convenience samples are samples taken due to their ease of gathering information. Since they simple used the first and last 10, this is an example of that. Convenience samples are generally biased as they probably don't represent the entire set of interest. [Show More]

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