问题如下：
Frequency distributions summarize data in:
选项：
A.a tabular display.
overlapping intervals.
a relatively large number of intervals.
解释：
A is correct. A frequency distribution is a tabular display of data summarized into a relatively small number of intervals.
B is incorrect because intervals cannot overlap. Each observation is placed uniquely into one interval.
C is incorrect because a frequency distribution is summarized into a relatively small number of intervals.
这个单词在讲义里没有提及，是考试重点吗，题目的这个名词是什么意思
