1. Statistics is a—————-
a. Science
b. trick
c. game
d. none of these
Correct Answer: a
.
2. The sum of deviations taken from mean is:
a. minimum
b. less than zero
c. zero
d. one
Correct Answer: c
.
3. The methods used to determine something about a population on the basis of a sample is called:
a. inferentail statistics
b. descriptive stats
c. applied stats
d. none of these
Correct Answer: a
.
4. When the variable studied can be reported numerically, the variable is called a:
a. independent
b. dependent
c. Quntitative
d. Qualitative
Correct Answer: c
.
5. Data that are collected by any body for some specific purpose and use are called:
a. primary data
b. secondary data
c. discrete data
d. none of these
Correct Answer: a
.
6. The data which have under gone any treatment previously is called:
a. Secondary data
b. primary data
c. discrete data
d. none of these
Correct Answer: a
.
7. Any phenomenon which is not measurable is called:
a. Attribute
b. variable
c. constant
d. none of these
Correct Answer: a
.
8. Statistics results are:
a. random true
b. always true
c. often true
d. True on average
Correct Answer: d
.
9. The probability of an event cannot be:
a. more than zero
b. less than 1
c. Less than zero
d. equal to zero
Correct Answer: c
.
10. A measure of the chance that an uncertain event will occur:
a. a trail
b. an experiment
c. probability
d. an event
Correct Answer: c
.
11. Two dice are rolled. Probability of getting similar faces is
a. 1\6
b. 5\36
c. 1\2
d. none of these
Correct Answer: a
.
12. Two dice are rolled. Probability of getting total less than 4 or total more than 10 is given by:
a. 14\36
b. 1\36
c. 4\36
d. 10\36
Correct Answer: b
.
13. If A and B are two mutually exclusive and exhaustive events and P(A)=2P(B), then P(B) is equal to:
a. 14\36
b. 1\3
c. 1\2
d. 2\3
Correct Answer: b
.
14. When two dice are rolled, the maximum total on the two faces of the dice will be:
a. 2
b. 12
c. 6
d. 36
Correct Answer: b
.
15. Which is the impossible event when a die is rolled:
a. 0 to 7
b. 1 to 6
c. 2 to 5
d. none of these
Correct Answer: a
.
16. Scores that differ greatly from the measures of central tendency are called:
a. extreme scores
b. raw scores
c. z-scores
d. none of these
Correct Answer: a
.
17. The total of all the observations divided by the number of observations is called:
a. H.M
b. median
c. A.M
d. G.M
Correct Answer: c
.
18. Mode of the letter STATISTICS:
a. A
b. S,T
c. S
d. T
Correct Answer: b
.
19. To find out the common diseases in 20 patients, suitable average is:
a. all of these
b. mode
c. median
d. mean
Correct Answer: b
.
20. The population mean µ is called:
a. statistic
b. sample
c. papulation
d. paramater
Correct Answer: d
.
21. The arithmetic mean is highly affected by:
a. all of these
b. extreme scores
c. raw scores
d. z-scores
Correct Answer: b
.
22. The sum of deviations taken from mean is:
a. more than zero
b. minimum
c. zero
d. less than one
Correct Answer: c
.
23. mean of 20 same values is 10 then the sum of all these values:
a. 200
b. 20
c. 100
d. none of these
Correct Answer: a
.
24. Ten families have an average of 2 boys. How many boys do they have together:
a. 20
b. 10
c. 15
d. none of these
Correct Answer: a
.
25. We must arrange the data before calculating:
a. mode
b. G.M
c. median
d. mean
Correct Answer: c
.
26. If the data contains an extreme value, the suitable average is:
a. mode
b. H.M
c. median
d. mean
Correct Answer: c
.
27. Suitable average for averaging the shoe sizes for children is
a. mean
b. G.M
c. mode
d. median
Correct Answer: c
.
28. scatterness of the values around the mean values is called:
a. average
b. mean deviation
c. range
d. dispersion
Correct Answer: d
.
29. to compare more than two items suitable measure of dispersion is:
a. S.D
b. mean deviation
c. C.V
d. variamce
Correct Answer: c
.
30. variance of 4,4,4,4,4,4,4,,4 is
a. 0
b. 4
c. 44
d. none of these
Correct Answer: a
.
31. If all the scores on examination cluster around the mean, the dispersion is said to be:
a. ab-normal
b. small
c. large
d. normal
Correct Answer: b
.
32. Which of the following is an absolute measure of dispersion?
a. S.D
b. c.v
c. cofficient of M.D
d. none of these
Correct Answer: a
.
33. The measure of dispersion which uses only two observations is called
a. all of these
b. Range
c. S.D
d. mean deviation
Correct Answer: b
.
34. The range of the scores 29, 3, 143, 27, 99 is:
a. 140
b. 143
c. 130
d. none of these
Correct Answer: a
.
35. The sum of absolute deviations is minimum if these deviations are taken from the
a. mode
b. G.M
c. median
d. mean
Correct Answer: c
.
36. The average of squared deviations from mean is called
a. S.D
b. mean deviation
c. range
d. variance
Correct Answer: d
.
37. Which of the following is a unit free quantity:
a. S.D
b. mean deviation
c. C.V
d. variance
Correct Answer: c
.
38. if mean= Rs.20, S= Rs.10, then coefficient of variation is
a. 0.55
b. 0.5
c. 0.6
d. 0.45
Correct Answer: b
.
39. A relationship where the flow of the data points is best represented by a curve is called:
a. negative linear
b. no relationship
c. Linear relatioship
d. normal relationship
Correct Answer: c
.
40. In simple linear regression, the numbers of unknown constants are:
a. two
b. more than two
c. at least two
d. none of these
Correct Answer: a
.
41. In simple regression equation, the numbers of variables involved are
a. 3
b. two
c. 0
d. 1
Correct Answer: b
.
42. If the value of any regression coefficient is zero, then two variables are:
a. independent
b. dependent
c. correlation
d. none of these
Correct Answer: a
.
43. Range of correlation always lie between:
a. 0 to 1
b. none of these
c. 1 to 6
d. 1 to 2
Correct Answer: b
.
44. paramater of binomial distribution are:
a. n and p
b. n,p and q
c. p and q
d. none of these
Correct Answer: a
.
45. The χ2-test should not be used if any expected frequency is:
a. less than 5
b. more than 5
c. exact 5
d. none of these
Correct Answer: a
.
46. The shape of the Chi-square distribution is:
a. symmetrical
b. all of these
c. poistively skewed
d. negatively skewed
Correct Answer: c
.
47. in negative binomial distribution probability of success:
a. less than trails
b. more than trails
c. equl to trails
d. none of these
Correct Answer: a
.
48. A statement about a population developed for the purpose of testing is called:
a. alternative hypo
b. level of sig
c. Hypothesis
d. null hypothesis
Correct Answer: c
.
49. A hypothesis may be classified as
a. simple hypo
b. composite hypo
c. null hypo
d. all of the above
Correct Answer: d
.
50. A rule or formula that provides a basis for testing a null hypothesis is called:
a. level of sig
b. all of these
c. Test statistic
d. degree of freedom
Correct Answer: c
.
