Category: Statistics MCQs FPSC NTS PPSC Past Papers Test Questions

(A) Correlation
(B) Regression
(C) Covariance
(D) ANOVA

The answer is: (B) Regression

Q. 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

The answer is: (A) 0 and 1, including 0 and 1

(A) 5, 6, 7
(B) 7, 6, 5
(C) 6, 5, 7
(D) 7, 5, 6

The answer is: (D) 7, 5, 6
Solution
Mean=(5+4+10+12+1+5+3+7+15+8)/10=7
Mode=5 (it is the most repeated value)
For median, first arrange the values in ascending order: 1, 3, 4, 5, 5, 7, 8, 10, 12, 15. Now, 5 and 7 are the middle values. The average is: (5+7)/2=6. Therefore, 6 is the median. Hence, mean, mode and median are 7, 5, 6 respectively.

(A) event
(B) outcome
(C) experiment
(D) sample space

The answer is: (C) experiment

(A) 0
(B) 1
(C) positive
(D) negative

The answer is: (A) 0

(A) 0, 1
(B) 1, 0
(C) –1, 1
(D) –∞, ∞

The answer is: (A) 0, 1

(A) skewness
(B) kurtosis
(C) variance
(D) standard deviation

The answer is: (B) kurtosis

(A) Exponential
(B) Poisson
(C) Normal
(D) Gamma

The answer is: (A) Exponential

(A) 0.01
(B) 0.05
(C) 0.1
(D) 0.5

The answer is: (C) 0.1

(A) sufficient evidence
(B) insufficient evidence
(C) data
(D) experimentation

The answer is: (B) insufficient evidence