Question

current attempt in progress
a pharmaceutical company is developing a new medication to treat gastric esophageal reflux disease, or gerd. they do a lot of research to determine if their medication helps to treat gerd symptoms, and eventually they determine that the effectiveness of this drug is no better than random chance. in other words, they’ve found that their medication lacks
standard deviation
parametricity
central tendency
statistical significance

Explanation:

• Standard deviation: Measures data spread, not related to effectiveness vs random chance. Eliminate.
• Parametricity: Relates to distribution assumptions, not about effectiveness comparison. Eliminate.
• Central tendency: Measures data center (mean, median, mode), irrelevant here. Eliminate.
• Statistical significance: Determines if results are better than random chance. The company found the drug’s effectiveness is no better than random, meaning it lacks statistical significance.

Answer:

statistical significance