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A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of（）.

A、a census;
B、descriptive statistics;
C、an experiment;
D、statistical inference

发布时间：2025-09-06 12:16:15

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答案：statistical inference

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A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of（ ）.