Statistics MCQs

734 MCQs  (Page 23 of 74)

Attempt Statistics Mcqs Quiz
Variance remains unchanged by change of________________?
A. Origin
B. Scale
C. Both
D. None of these
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If a and b are two constants, then Var(a+bX) is_______________?
A. A±bvar(x)
B. Var(a)±var(x)
C. ±bvar(x)
D. B2var(x)
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The sum of squared deviations of a set of n values from their mean is__________________?
A. Zero
B. Maximum
C. Least
D. None
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Lowest value of variance can be________________?
A. 1
B. -1
C. 3
D. -3
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A measure of dispersion is always ________________?
A. Zero
B. Positive
C. Negative
D. Infinity
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The measure of dispersion is changed by a change of_____________?
A. Origin
B. Scale
C. Algebraic signs
D. None
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Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?
A. 4
B. 8
C. 2
D. 12
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You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 67 inches. This is an example of ?
A. Descriptive statistics
B. Inferential statistics
C. Parameter
D. Population
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The algebraic sum of deviations from mean is_____________?
A. Maximum
B. Zero
C. Minimum
D. Undefined
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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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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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