Latest WGU Data-Driven-Decision-Making C207 Practice Questions By Bentley

In a blind study, the purpose is to reduce bias that may influence responses or outcomes. In data-driven decision making, a blind study is designed so that subjects and response gatherers do not know which treatment is administered, while the researchers do retain this information to correctly manage and analyze the experiment.

In this scenario, dog owners and response gatherers should not know whether the dogs received the medication or a placebo, as this knowledge could influence reporting of outcomes or observations. However, researchers must know which treatment each dog receives to ensure proper administration, monitoring, and statistical analysis.

If neither researchers nor participants knew the assignments, the study would be classified as a double-blind study, which is not stated here. Allowing owners or response gatherers to know treatment assignments would introduce bias and undermine experimental validity.

Therefore, in a blind study, only the researchers should know which dogs received the medication or placebo, making option C the correct answer.

A run chart and a control chart are similar in that both display data over time, making it possible to observe trends, shifts, or recurring patterns in a process. The key difference is that a control chart includes control limits, or constraints, that define the expected range of normal variation for the process. These limits help analysts determine whether the process is statistically stable or whether unusual variation may signal a problem that requires attention. A run chart does not include those control boundaries; it simply displays the values in time order. Because of this, the correct description is that the two charts are essentially the same in structure, except a control chart includes limits or constraints that a process should not exceed. The options that describe one as a snapshot in time are incorrect because both are time-based charts. Therefore, the correct answer is the option identifying the control chart as the version that adds limits or thresholds for process monitoring.