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.Management Sciences
Category: Basic Statistics Mcqs
The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is______________?
0
A. 20
B. 5
C. 2.5
D. 5.5
E. 0
If right tail is longer than left tail then distribution is called _________________?
A. Negatively Skewed
B. Positively Skewed
C. All of above
D. None of these
Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
A. 50
B. 70
C. 50/20
D. 50-20 = 30
E. 50
In Statistics, a population consists of:_____________?
A. All People living in a country
B. All People living in the are under study
C. All subjects or objects whose characteristics are being studied
D. None of the above
Primary data and _____________ data are same?
A. Grouped
B. Secondary data
C. Ungrouped
D. None of these
In statistics, a sample means______________?
A. A portion of the sample
B. A portion of the population
C. all the items under investigation
D. none of the above
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