单项选择题
If the individual class frequency is divided by the total frequency, the result is the （）.
A.midpoint frequency
B.cumulative frequency
C.stem and leaf plot
D.relative frequency
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相关考题
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单项选择题
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
A.ogive
B.histogram
C.frequency distribution
D.stem and leaf plot -
单项选择题
Which of the following is not the goal of descriptive statistics?（）
A.Summarising data
B.Displaying aspects of the collected data
C.Reporting numerical findings
D.Estimating characteristics of the population -
单项选择题
A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of （）.
A.descriptive statistics
B.inferential statistics
C.nonparametric statistics
D.wishful thinking
