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Mathematics → Statistics → Statistics Multiple Choice Questions
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16. Which of the following statement is true about the following two data sets?
Data Set 1: 4, 3, 5, 7, 6
Data Set 2: 2, 10, 1, 9, 3
(A) mean and variance are equal
(B) mean and variance are not equal
(C) mean is equal but variance is not
(D) variance is equal but mean is not
17. If an experiment is repeated independently for a large number of times, it converges to a/an
(A) expected value
(B) variance – mean
(C) normal distribution
(D) uniform distribution
18. Which statistical method is used to estimate the relationship between two variables?
(A) Correlation
(B) Regression
(C) Covariance
(D) ANOVA
19. The value of R2, the coefficient of determination, is always between
(A) 0 and 1, including 0 and 1
(B) 0 and 1, excluding 0 and 1
(C) –1 and 1, including –1 and 1
(D) –1 and 1, excluding –1 and 1
ANSWERS: STATISTICS MULTIPLE CHOICE QUESTIONS
16. (C) mean is equal but variance is not
17. (A) expected value
18. (B) Regression
19. (A) 0 and 1, including 0 and 1
SOLUTIONS: STATISTICS MULTIPLE CHOICE QUESTIONS
16. Here, Mean(Data1)=5, Mean(Data2)=5. But, Var(Data1)=2.5, Var(Data2)=17.5
17. If an experiment is repeated independently for a large number of times, it converges to a fixed number/ expected value/ expected distribution.