Category: Statistics MCQs FPSC NTS PPSC Past Papers Test Questions

(A) α value
(B) p value
(C) test statistic
(D) confidence interval

The answer is: (B) p value

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

The answer is: (D) ANOVA (Analysis of variance)

(A) 4
(B) 5
(C) 6
(D) 7

The answer is: (B) 5
Solution
Here total numbers are 6. So,

(A) 0.0
(B) 0.3
(C) 0.9
(D) 1.2

The answer is: (D) 1.2
Explanation
The probability of an event is always between 0 and 1 (including 0 and 1). So, 1.2 cannot be the probability of an event.

Q. If a random variable X has a normal distribution, then e^X has a/an ________ distribution.
(A) lognormal
(B) exponential
(C) Poisson
(D) binomial

The answer is: (A) lognormal
Explanation
A lognormal distribution is a probability distribution of a random variable whose logarithm is normally distributed. So, if X is lognormal then Y=ln(X) is normal. Similarly, if Y is normal then X=e^Y is lognormal.

(A) 4
(B) 5
(C) 6
(D) 7

The answer is: (A) 4
Solution
There are 4 numbers in total. So, by using the formula for calculating geometric mean, we have

(A) t test
(B) z test
(C) F test
(D) χ² test

The answer is: (C) F test

(A) 0
(B) 1
(C) λ
(D) 1/λ

The answer is: (C) λ

(A) Type-I error
(B) Type-II error
(C) Type-III error
(D) Type-IV error

The answer is: (A) Type-I error

(A) 1/3
(B) 5/6
(C) 2/3
(D) 3/4

The answer is: (B) 5/6