There is a data set shown as follow: 17, 1, 12, 6, 9, 2, 8, 41. The arithmetic mean is:()
A. 8.5
B. 12
C. 8
D. 17
E. 9
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Which measure should be used to compare the variability between height and weight. ()
A. CV
B. variance
C. range
D. standard deviation
E. inter-quartile range
Which measure should be used to describe the central tendency of the symmetrical distribution.()
A. median
B. arithmetic mean
CV
D. inter-quartile range
E. standard deviation
Which measure should be used to describe the dispersion of the skewed distribution. ()
A. range
B. arithmetic mean
CV
D. inter-quartile range
E. median
There is a normal distribution x~N(0, 100), what is the standard deviation:()
A. 0
B. 10
C. 100
D. 10000
E. 1