STA301 Midterm MCQs Set 4 by VU Topper RM

Q1. Vu-Topper RM (1 marks)

Positive square root of variance is known as: A. Rang B. Quartile deviation

C. Standard deviation Page 91

D. only (a) &(c)

Q2. Vu-Topper RM (1 marks)

Given P(A) = 0.4, P(B) = 0.5 and P(A⋃B)=0.9,then:?

1. A and Bare independent events
2. A and B are equally likely events
3. A and B are mutually exclusive events
4. A and B are not mutually exclusive events

Correct answer: A and B are mutually exclusive events

Q3. Vu-Topper RM (1 marks)

Which is appropriate average for finding the average speed of a car:

A. Mean

B. Mode C. Both D. None of these

Q4. Vu-Topper RM (1 marks)

The-------is often the preferred measure of central tendency if the data are severely skewed.

A. The median

B. The Mode

Q5. Vu-Topper RM (1 marks)

ln measures of relative dispersion, unit of measurement remains:

A. Different

B. Un different

Q6. Vu-Topper RM (1 marks)

Frequency curve is.

A. Asymmetric to x axis

B. Asymmetric to y axis

Q7. Vu-Topper RM (1 marks)

Parameter is a ………quantity.

A. Constant

B. Variable

Q8. Vu-Topper RM (1 marks)

What does the set comprising all possible outcomes of an experiment known as?

1. Sure event
2. Null event
3. Elementary event
4. None of the these

Correct answer: Sure event

Q9. Vu-Topper RM (1 marks)

A histogram is consisting of a set of a set of adjacent rectangles whose bases are marked off by:

A. Class boundaries Page 32

B. Class limits C. Class frequency D. Class marks

Q10. Vu-Topper RM (1 marks)

The middle value of an ordered array of numbers is the A. Mean

B. Median Page 59

C. Mode D. Midpoint

Q11. Vu-Topper RM (1 marks)

If Mean =25 & S.D is 5 then C.V is: A. 100%

B. 20% Page 88

C. 10% D. 25%

Q12. Vu-Topper RM (1 marks)

You connect the mid-points of rectangles in a histogram by a series of lines that also touches the x-axis from both ends, you will get: A. Ogive B. Frequency polygon

C. Frequency curve Page 38

D. Histogram

Q13. Vu-Topper RM (1 marks)

The conditional probability P (A/B) is:

A. P (A n B)/P (B) Page 154

B. P (A n B)/P (A) C. P (A U B)/P (B) D. P (A U B)/P (A)

Q14. Vu-Topper RM (1 marks)

Chebyshev’s inequality does not hold for k = ?

1. 3
2. 2
3. 1
4. 0 Page 94

Correct answer: 0 Page 94

Q15. Vu-Topper RM (1 marks)

According to Empirical rule, approximately 68% of the measurements will fall within: