Standard deviation is to variability as mode to?

Standard deviation is to variability as mode to?

• A. Correlation
• B. Discrimination
• C. Central tendency
• D. Level of difficulty

Answer: (C)

Standard deviation captures how spread out data are around the typical value, i.e., the variability in a dataset. The mode does something similar for central tendency: it shows a feature of the distribution's center by identifying the value that occurs most often. Among the options, the mode is a form of central tendency, whereas correlation describes relationships between two variables, discrimination concerns how well an item differentiates between respondents, and level of difficulty refers to how hard a task is. So the best parallel is central tendency.

Standard deviation captures how spread out data are around the typical value, i.e., the variability in a dataset. The mode does something similar for central tendency: it shows a feature of the distribution's center by identifying the value that occurs most often. Among the options, the mode is a form of central tendency, whereas correlation describes relationships between two variables, discrimination concerns how well an item differentiates between respondents, and level of difficulty refers to how hard a task is. So the best parallel is central tendency.