Name of the Organisation : University Of Library - Cochin University of Science and Technology
Name of the Exam : Common Admission Test (CAT)
Document Type : Sample Question Paper
Year: 2016
Subject: Statistics (Final)

Website : www.library.cusat.ac.in/cat/2016/
Download Model/Sample Question Papers: http://www.indianjobtalks.com/upload...Statistics.pdf

CAT PG Statistics Final Model Question Paper :
1. If d M Q D and P stands for Median, Quartile, Decile and Percentile respectively, then which of the following relation between them is true?
A. d 2 6 50 M = Q = D = P
B. d 3 5 75 M = Q = D = P
C. d 2 4 50 M = Q = D = P
D. d 2 5 50

2. If the first Quartile 1 Q = 20 and third Quartile 3 Q = 50 , then Q.D is
A. 35
B. 15
C. 2.5
D. 0.8

3. Sum of squares of the deviation is minimum when the deviations are taken from
A. mean
B. median
C. mode
D. an arbitrary value

4. When the collected data is grouped with reference to time, we have
A. quantitative classification
B. qualitative classification
C. geographical classification
D. chronological classification

5. If the lower and upper limits of a class are 10 and 40 respectively, the midpoint of the class is
A. 15
B. 12.5
C. 25
D. 30

6. For a symmetrical distribution, the coefficient of skewness is
A. 3 = 1
B. 3 = 3
C. 3 = 0
D. 3 = -1

7. Sub divided bar diagram is also called ……. diagram
A. bar diagram
B. component bar
C. Pie diagram
D. histogram

8. …………… curve is a graphical method of studying dispersion.
A. Lorenz
B. Ogive
C. Frequency
D. Histogram

9. Ogives for more than type and less than type distributions intersect at
A. mean
B. median
C. mode
D. origin

10. Histogram is suitable for the data presented as
A. continuous grouped frequency distribution
B. discrete grouped frequency distribution
C. individual series
D. all of the above

11. Extreme value have no effect on
A. average
B. median
C. geometric mean
D. harmonic mean

12. Statistical results are
A. absolutely correct
B. not true
C. true on average
D. histogram

13. Data classified according to the attributes of the subjects or item is known as
A. quantitative
B. qualitative
C. geographical
D. chronological

14. Identify the scale of measurement for the variable “Temperature”
A. ratio
B. interval
C. ordinal
D. nominal

16. If a constant value 5 is subtracted from each observation of a set, the variance is
A. reduced by 5
B. reduced by 25
C. unchanged
D. increased by 25

17. The average of the sum of squares of the deviation about mean is called
A. variance
B. absolute deviation
C. standard deviation
D. mean deviation

18. In an experiment to determine if antibiotics increase the final dressed weight of cattle, the following were measured on animal in the study. Sex, initial weight, weight gain, grade of meat Where grade is recorded as (A, B or C), the scale of measurement of these variable are
A. nominal, ratio, interval, nominal
B. nominal, ratio, ratio, nominal
C. nominal, ratio, ratio, ordinal

19. The first quartile divides a frequency distribution in the ratio
A. 4:1
B. 1:4
C. 3:1
D. 1:3

20. Geometric mean of two numbers 1/16 and 4/25 is
A. 1/10
B. 1/100
C. 10
D. 100

21. Sum of deviations about mean is
A. zero
B. minimum
C. maximum
D. one

22. The correlation between the variables is unity, there is
A. some correlation
B. perfect positive correlation
C. perfect negative correlation
D. no correlation

23. Classical probability is measured in terms of
A. an absolute value
B. a ratio
C. Both absolute value and ratio
D. None of the above

24. The limiting relative frequency approach of probability is known as
A. Statistical Probability
B. Classical Probability
C. Mathematical Probability
D. All of the above

25. If it is known that an event A has occurred, the probability of an event E given A is called
A. Empirical probability
B. A priori probability
C. Posterior probability
D. Conditional probability