A.histogram
B.ogive
C.stem and leaf chart
D.pie chart
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A.the number of classes must be less than 10
B.each data point can only fall into one class
C.the width of each class is equal to the range
D.the number of intervals must be an odd number
A.it contains more class intervals
B.the values of the original data are retained
C.the class midpoints are used as the stem
D.the class midpoints are used as the leaf
A.3 and 5
B.7 and 9
C.5 and 15
D.1 and 25
A.an ogive
B.a histogram
C.a frequency polygon
D.a stem and leaf plot
A.midpoint frequency
B.cumulative frequency
C.stem and leaf plot
D.relative frequency
最新試題
變量數(shù)列中，各組頻率之和應(yīng)（）
One rule that must always be followed in constructing frequency distributions is that （）.
如果居民按報(bào)告期價(jià)格購(gòu)買商品需多支出40萬元，報(bào)告期商品銷售額為200萬元，則價(jià)格指數(shù)為（）
最能反映離散程度的指標(biāo)是（）
If the individual class frequency is divided by the total frequency, the result is the （）.
常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些？各有什么特點(diǎn)？
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
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 （）.
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the cumulative frequency of the third class？（）