A.statistic
B.sample
C.population
D.parameter
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A.statistic
B.population
C.parameter
D.sample
A.nonparametric statistics
B.nominal data
C.descriptive statistics
D.inferential statistics
A.binomial
B.uniform
C.normal
D.Possion
A.68%
B.95%
C.99.7%
D.none of the above
A.the variance is not as accurate a measurement as the standard deviation
B.the standard deviation has been corrected for bias while the variance has not
C.the standard deviation is in the same units as the data values.
D.the variance is in the same units as the data values.
A.square
B.absolute value
C.minimum
D.maximum
A.median;mean
B.data point;mean
C.quartile;median
D.data point;median
最新试题
常用的长期趋势测定的方法有哪些?各有什么特点?
最能反映离散程度的指标是()
The number of class intervals in a frequency distribution is usually between ().
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
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?()
对全国各铁路交通枢纽的货运量、货物种类等进行调查,以了解全国铁路货运概况。这种调查属于()
If the individual class frequency is divided by the total frequency, the result is the ().
企业生产一种产品需顺次经过四个车间,这四个车间的废品率分别为1.5%、2.0%、2.0%和1.0%。该企业生产这种产品的平均废品率是多少?
某厂某年职工劳动生产率为20000元,是历史最高水平的1.2倍。这里的1.2倍是()
A cumulative frequency distribution would provide().