A.a graph of a frequency distribution
B.a running total of the frequencies in the classes
C.the proportion of the total frequencies which fall into each class
D.a very cloudy picture of the frequencies
您可能感興趣的試卷
你可能感興趣的試題
A.histogram
B.ogive
C.stem and leaf chart
D.pie chart
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
最新試題
Which of the following statements is not true？（）
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 （）.
If the individual class frequency is divided by the total frequency, the result is the （）.
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
為什么在計(jì)算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計(jì)算變異指標(biāo)？
常用的長期趨勢(shì)測(cè)定的方法有哪些？各有什么特點(diǎn)？
Which of the following is not the goal of descriptive statistics?（）
A cumulative frequency polygon is also called （）.
Descriptive statistics deals with methods of（）