The probability of an event cannot be _____________?
The probability of an event cannot be _____________?
A. Positive
B. Zero
C. None of these
D. Negative
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The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?
The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?A. 60.4%
B. 48.3%
C. 35.7%
D. 27.8%The sampling error is the_____________?
The sampling error is the_____________?A. Same as the standard error of the mean
B. Difference between the value of the sample mean and the value of the population mean
C. Error caused by selecting a bad sample
D. Standard deviation multiplied by the sample sizeAverage calculated used in index number by __________ method?
Average calculated used in index number by __________ method?A. Three
B. Two
C. Four
D. OneIn binomial distribution with ________ trials mean is np and variance is npq?
In binomial distribution with ________ trials mean is np and variance is npq?A. Dependent
B. Independent
C. Linear
D. EqualLeast square regression line always passes through ____________________?
Least square regression line always passes through ____________________?A. (x,y)
B. (X,Y)
C. (X,Z)
D. x/yE(ax + b) = A E(x) +___________________?
E(ax + b) = A E(x) +___________________?A. (C)
B. E(x)
C. b E(a)
D. b