Only one piece of information is collected from each member of the group.

• A. Descriptive statistics
• B. Univariate data
• C. Observations
• D. Outlier

Answer: (B)

The key idea here is data type by the number of variables you measure per person. If each member contributes only a single piece of information, you’re dealing with univariate data—the data set has one variable measured across all individuals. For example, recording just ages for every person in a group gives univariate data. If you started collecting two pieces of information per person (like age and height), the data would involve two variables and move beyond univariate.

Descriptive statistics is about summarizing data, not defining how many variables are recorded. An observation is an individual data point, and an outlier is a value that stands out far from the others.