A.一個
B.二個
C.三個
D.四個
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A.發(fā)病率
B.性別
C.年齡段
D.居住地區(qū)
A.Analyze→Compare Means→Means
B.Analyze→Compare Means→One-Samples T Test
C.Analyze→Compare Means→Independent-Samples T Test
D.Analyze→Compare Means→Paired-Samples T Test
A.Analyze→Descriptive Statistics→Frequencies
B.Analyze→Descriptive Statistics→Descriptives
C.Analyze→Descriptive Statistics→Crosstabs
D.Analyze→Descriptive Statistics→Ratio
A.Dichotomies
B.Categories
C.Counted
D.Range
A.Exact
B.Statistics
C.Cells
D.Format
最新試題
One advantage of a stem and leaf plot over a frequency distribution is that （）.
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查，以了解全國鐵路貨運概況。這種調(diào)查屬于（）
一個地區(qū)一定時期的商品零售額屬于（）
If the individual class frequency is divided by the total frequency, the result is the （）.
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 （）.
常用的長期趨勢測定的方法有哪些？各有什么特點？
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？（）
以2000年a0為最初水平，2016年an為最末水平，計算鋼產(chǎn)量的年平均發(fā)展速度時，須開（）