Pre-Test Exam-2022_Statistics_MCQ_EV_Sample Questions
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Subject Code: 1 2 9
BAF Shaheen College Dhaka Pre-Test -22
Multiple Choice Questions Subject: Statistics
Time-25 minutes Full marks-25 1. Which is defined as the subject of collection,
presentation and analysis and presentation and interpretation of numerical data
(a) Mathematics (b) Statistics (c) Accounting (d) Economics
2. Which is called the changable characteristics of the data ?
(a) Constant (b) Variable (c) Population (d) Sample
3. If 𝑥1= 2, 𝑥2= −3, 𝑥3= 7 and 𝑥4= 12 than
∑4𝑖=1𝑥𝑖2=?
(a) 26 (b) 106 (c) 206 (d) 216 4. What are the types of the measurement of scale ?
(a) 2 (b) 3 (c) 4 (d) 5 5. Which is called the unchangable characteristics of the data ?
(a) Constant (b) Variable (c) Population (d) Sample
6. Which is the ideal measure of central tendency
?
(a) Arithmetic mean (b) Geometric mean (c) Harmonic mean (d) Median
7. The Arithmetic mean of first n natural number is –
(a) 𝑛(𝑛+1)
2 (b) 𝑛+1
2 (c) 𝑛2−1
2 (d) 𝑛2−1
12 8. Which of the following relaion is correct ? (a) 2AM ×HM = (𝐺𝑀)2 (b) AM ×HM = (𝐺𝑀)2
(c) AM × 𝐺𝑀 = (𝐻𝑀)2 (d) GM ×HM = (𝐴𝑀)2
From the following stem, answer the question Nos. 9 and 10.
The data collected from an investigation is as follows:
4, 8, 16, 32, 64 9. Which mean is appropriate ?
(a) Harmonic mean (b) Geometric mean (c) Mode (d) Arithmetic mean 10. Which is the median of the stem ?
(a) 8 (b) 12 (c) 16 (d) 24
11. The set or collection of all possible outcomes of a random experiment is called-
(a) Event (b) Trial (c) Sample point (d) Sample space
12. How many sample points are there in throwing three coins simultaneously ?
(a) 2 (b) 4 (c) 8 (d) 16 13. If two unbiased coins are thrown simultaneously, the event of getting opposite side is –
(a) Impossible event (b) Certain event (c) Uncertain event (d) Simple event 14. What is the maximum value of probability ? (a) 100 (b) 0.5 (c) 0.75 (d)1 15. When two or more events have common elements in a random experiment then these are called-
(a) Certain event (b) Complementary event (c) Mutually exclusive events (d) Non mutually exclusive events
16. If y is a random variable and C is a constant, then-
i. V(Cy)=𝐶2𝑉(𝑦) ii. V(Cy)=𝐶𝑉(𝑦) iii. E(Cy)=𝐶𝐸(𝑦)
Which of the following is correct?
(a) i i (b) i i i (c) i and i i i (d) i, and i i
17. What is the value of V(2x+5) .
(a) 4V(x)+5 (b) V(x) (c) 0 (d) 4V(x) 18. What is the value of V(7).
(a) 0 (b) 1 (c) 7 (d) 49
19. Which is equal to second central moments of distribution?
(a) standard deviation (b) mean deviation (c) variance (d) Co-efficient of variation
20. In case of negative skewed –
i. the right side of frequency curve is high ii. mean < median < mode
iii. mean > median > mode Which one is correct ?
(a) i and ii (b) i and iii (c) ii and iii (d) i, ii and iii
21. What is the value of 𝛽1 in the case of symmetrical distribution?
(a) -1 (b) 3 (c) 1 (d) 0 22. What are the types of kurtosis?
(a) 2 (b) 3 (c) 4 (d) 5 23. What are the type of random Variable?
(a) 2 (b) 3 (c) 4 (d) 5 24. What is called the set of all possible values of a random variable together with the associated probabilities?
(a) Joint probability function (b) Probability function (c) Probability distribution
(d) Probability density function 25. Which is the discrete random variable?
(a) Student’s age of a class
(b) Quantity of the production of a day in factory
(c) Number of road accident at Dhanmondi (d) Height of the worker
