Statistical Data Literacy - D772 Pretest with correct answers 100% 2025/2026

Statistical Data Literacy - D772 Pretest with correct answers 100% 2025/2026 What is one example of a sample from a research study? - Correct Answer A set of 100 randomly collected bees from a hive What is one example of an individual in an allergy treatment study? - Correct Answer A patient who is part of the study To determine customer product preferences, a clothing company uses a computer to fairly select 100 of its customers to participate in an interview. What is the sampling method described in this situation? - Correct Answer Simple random What is the advantage of using simple random sampling? - Correct Answer It is the most straightforward and effective way to produce data that is likely to be representative of the population. What is one example of an experiment? - Correct Answer To measure the effect of light on attention span, researchers recruit participants and randomly assign them to two rooms, one with artificial light and the other with natural light. What role does the researcher play in an experiment? - Correct Answer Manipulate variables and observe the effects What is an example of a control group? - Correct Answer In a study on a new plant fertilizer, those not receiving the fertilizer The director of campus food services at a university wants to study the food preferences of students on campus. They place phone calls to 500 random students that span the grade levels. What is the sample in this study? - Correct Answer Students called by the director What is one implication of using a representative sample? - Correct Answer The sample provides reliable data that can be generalized to the larger population with confidence. What is one situation that shows a sampling frame error? - Correct Answer To obtain information on preferences on movies being shown at a small theater, the owner asked for input from all customers that visited the theater on Monday or Tuesday of a given week. Which example illustrates a perceived lack of anonymity? - Correct Answer A coach hands out a survey asking players to evaluate the quality of coaching and collects the survey from them on their way out of practice. When conducting a survey about the preference of print magazines over digital magazines, the research firm calls a completely random list of 500 individuals, with 23 people answering the call. What is the type of bias illustrated in this situation? - Correct Answer Non-response bias A retailer hands out hundreds of customer satisfaction surveys on pre-paid postcards, and by the deadline 26 people had mailed the survey in. What is illustrated in this scenario? - Correct Answer A retailer hands out hundreds of customer satisfaction surveys on pre-paid postcards, and by the deadline 26 people had mailed the survey in. What is illustrated in this scenario? What is one situation that shows a perceived lack of anonymity? - Correct Answer The president of a marketing firm emails a survey to senior executives on how well the company is being led, and they are asked to send it back to the president's administrative assistant. A scientist is designing an experiment to test a hypothesis. Which practice should be avoided to ensur