A.One form of descriptive statistics uses graphical techniques
B.One form of descriptive statistics uses numerical techniques
C.In the language of statistics，the term population refers to a group of people
D.Statistical inference is used to draw conclusions or inferences about characteristics of populations based on sample data
您可能感興趣的試卷
你可能感興趣的試題
A.organising data.
B.summarising data
C.presenting data in a convenient and informative way
D.doing all of the above
A.population
B.sample
C.parameter
D.statistic
A.a parameter
B.a statistic
C.a population
D.Both A and C are correct，since they are the same
A.population
B.sample
C.parameter
D.statistic
A.3 million registered voters in the state.
B.5000 registered voters interviewed.
C.53.6%of，or 2680，voters interviewed who plan to vote for him
D.46.4%of，or 2320，voters interviewed who plan not to vote for him
最新試題
One advantage of a stem and leaf plot over a frequency distribution is that （）.
對全國各鐵路交通樞紐的貨運量、貨物種類等進(jìn)行調(diào)查，以了解全國鐵路貨運概況。這種調(diào)查屬于（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
為什么在計算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計算變異指標(biāo)？
A cumulative frequency polygon is also called （）.
Which of the following is not the goal of descriptive statistics?（）
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？（）
Which of the following statements is not true？（）
如果居民按報告期價格購買商品需多支出40萬元，報告期商品銷售額為200萬元，則價格指數(shù)為（）
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 approximate range of the number of phone calls arriving each hour？（）