# PUBLIC SERVICE COMMISSION & OTHER TESTS INFORMATION IN PAKISTAN

## Statistics Mcqs Test

Statistics Mcqs Test

(1) A cricket captain wins the toss for three consecutive matches. What is the probability that the will call correctly for the fourth match?
(a) 1/16
(b) 1/8
(c) 1/4
(d) 1/2
(e) None of these

(2) A and B are two independent events. The probability of A is Â¼ and B is 1/3. The neither probability of A nor B is:
(a) 5/12
(b) 1/3
(c) 3/4
(d) 11/12
(e) None of these

(3) Which one of the following statement is not true?
(a) Mutually exclusive events are statistically dependent.
(b) Complementary events have probabilities that sum to 1.
(c) Opposite events, are statistically independent.
(d) An experimentâ€™s elementary events are collectively exhaustive and mutually exclusive.
(e) None of these

(4) For a Poisson distribution with standard deviation equals to 2 then mean of the Poisson distribution equals to:
(a) 0
(b) 1
(c) 2
(d) 4
(e) None of these

(5) Which of the following could never by described by the binomial distribution?
(a) The number of defective items produced by an assembly process.
(b) The amount of water used daily by a single household.
(c) The number of people in a class who can answer a particular question
correctly.
(d) All of these
(e) None of these

(6) The area under the normal curve within two standard deviation of the mean is:
(a) 68.26 %
(b) 95.44 %
(c) 99.73 %
(d) 99.99 %
(e) None of these

(7) What information is given by a value of the coefficient of determination?
(a) Strength of relationship
(b) Both strength and direction of relationship
(c) Neither strength nor direction of relationship
(d) Direction of relationship only
(e) None of these

(8) A complete list of all the sampling units is called:
(a) stratum size
(b) unit list
(c) sampling frame
(d) sample design
(e) None of these

(9) If we decrease Type-I error, Type-II error:
(a) Remains same
(b) Increases
(c) Decreases
(d) None of these

(10) To test of equality of means of paired observations, we use:
(a) Chi-Square test
(b) t-test
(c) F-test
(d) Z-test
(e) None of these

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