1) Measures of central tendency are known as
A) difference         B) averages
C) both         D) None of these
2) Measures of central tendency for a given set of observations measures
A) The scatterness of the observations
B) The central location of the observations
C) Both (A) and (B)
D) None of these
3) The average has relevance for
A) homogeneous population
B) heterogeneous population
C) both (A) and (B)
D) None of these
4) A measure of central tendency tries to estimate the
A) central value     B) lower value
C) upper value     D) None of these
5) The number of measures of central tendency is
A) two         B) three
C)four         D)five
6) A.M is never less than G.M
A) True         B) False
C) Both (A) and (B)
D)None of these
7) While computing the A.M from a groped frequency distribution, we assume that
A) These classes are of equal length
B) The classes have equal frequency
C) All the values of a class are equal to the mid-value of that class
D) None of these
8) If the class interval is open-end, then it is difficult to find
A) frequency B) A.M
C) both (A) and (B)
D) None of these
9) The words ‘mean’ or ‘average’ only refer to
A) A.M     B) G.M     C) H.M
D) None of these
10) Which of the following statements is wrong?
A) Mean is rigidly defined
B) Mean is not affected due to sampling Fluctuations
C) Mean has some mathematical properties        D) All of these
11) When all values occur with equal frequency, there is no
A) mode         B) mean
C) median        D) None of these
12) Weighted A.M is related to
A) G.M         B) Frequency
C) H.M     D) None of these
13) The most commonly used measure of central tendency is
A) A.M         B) Median
C) Mode     D) Both G.M and H.M
14) Weighted averages are considered when
A)The data are not classified
B)The data are put in the form of grouped requency distribution.
C) All the observations are not of equal importance
D) Both (A) and (C)
15) The average discovers
A) uniformity in variability
B) variability in uniformity of distribution
C) both (A) and (B)
D) None of these
16) Each different value is considered only once for
A) simple average
B) Weighted average
C) both (A) and (B)
D) None of these
17) Which of the following statement is true ?
A) Usually mean is the best measure of central tendency
B) Usually median is the best measure of central tendency.
C) Usually mode is the best measure of central tendency
D) Normally, GM is the best measure of central tendency
18) When a frequency distribution is given, the frequencies of values are themselves treated as weights
A) true B) False
C) both (A) and (B)
D) None of these
19) The sum of the squares of deviations of a set of observations has the smallest value, when the deviations are taken from their
A) A.M         B) H.M
C) G.M     D) None of these
20) For a given set of observations A.M is greater than G.M
A) true         B) false
C) both (A) and (B)
D) None of these
21) Frequencies are generally used as
A) range         B) weights
C)mean    D) None of these
22) The values of all items are taken into consideration in the calculation of
A) median         B) mean
C) mode     D) None of these
23) The word ‘average’ used in ‘simple average’ and ‘weighted average’ generally refers to
A) median B) mode
C) A.M or G.M or H.M
D) None of these
24) The total of a set of observations is equal to the product of their numbers and the
A) A.M     B) G.M         C) A.M
D) None of these
25) Simple average is sometimes called
A) Weighted average
B) unweighted average
C) relative average
D) None of these
26) The algebraic sum of deviations of observations from their A.M is
A) 2       B) – 1        C) 1        D) 0
27) G.M is less than H.M
A) True         B) False
C) Both     D) None of these
28) Which of the following measure of the central tendency is difficult to computer?
A) Mean         B) Median
C) Mode         D) G.M
29) You are given the population of India for the courses of 1981 and 1991. You are to find the population of India at the middle of the period by average these population figures, assuming a consistent rate of increase of population. What is the suitable of average in this case
A) A.M     B) G.M       C) H.M
D) None of these
30) Which measure(s) of central tendency is (are) considered for finding the average rates?
A) A.M     B) G.M      C) H.M
D)Both (B) and (C)
31) Calculation of G.M is more difficult than
A) A.M     B) G.M      C) H.M
D) None of these
32) When a firm registers both profits and losses, which of the following measure of central tendency cannot be considered?
A) A.M         B) G.M
C) Median         D) Mode
33) G.M is defined only with
A) all observations have the same sign and none is zero
B) all observations have the different sign and none is zero
C) all observations have the same sign and one is zero
D) all observations have the different sign and one is zero.
34) More laborious numerical calculations involves in G.M than A.M.
A) True         B) False
C) Both D) None of these
35) G.M is useful in construction of index number
A) True         B) False
C) Both     D) None of these
36) In …. The quantities are in ratios.
A) A.M         B) G.M
C) H.M     D) None of these
37) ….. is not much affected by fluctuations of sampling
A) A.M         B) G.M
C) H.M     D) None of these
38) …… is the most stable of all the measures of central tendency
A) G.M         B) H.M
C) A.M     D) None of these
39) …… of a set of observations is defined to be their sum, divided by the number of observations
A) H.M         B) G.M
C) A.M     D) None of these
40) …… is used when variability has also to be calculated.
A) A.M         B) G.M
C) H.M         D) None of these
41) Logarithm of G.M is the ….. of the different values
A) weighted mean
B) Simple mean
C) Both     D) None of these
42) Mean is of … types
A) 3    B) 4       C) 8      D)5
43) ……average is obtained on dividing the total of a set of observations by their number
A) simple         B) weighted
C) both    D) none of these
44) ……. Is useful in averaging ratios, rates and percentages.
A) A.M     B) G.M         C) H.M
D) None of these
45) G.M of a set of n observations is the …… root not their product.
A) (n/2)th         B) (n+1)th
C) n th         D) (n-1)th
46) …….. and …….cannot be calculated if any observation is zero
A) G.M and A.M
B) H.M and A.M
C) H.M and G.M
D) None of these
47) …….. has a limited use
A) A.M     B) G.M     C) H.M
D) None of these
48) ……. Is the reciprocal of the A.M of reciprocal of observations.
A) H.M     B) G.M     C) Both
D) None of these
49) …….. is used when the sum of deviations from the average should be least
A) Mean         B) Mode
C) Median    D) None of these
50) Half of the number in an ordered set have values less than the …….. values greater than the ……..
A) Mean, Median
B) Median, median
C) Mode, Mean     D) None of these
Answers
1)B     2)B     3)B     4)A     5)B
6)A    7)C    8)B    9)A    10)B
11)B     12)B     13)A     14)C     15)A
16)A    17)A    18)C    19)A    20)A
21)B     22)B     23)C     24)C     25)B
26)D    27)B    28)D    29)B    30)D
31)A     32)B     33)A     34)A     35)A
36)A    37)B    38)C    39)C    40)A
41)A     42)A     43)A     44)B     45)C
46)C     47)C    48)A    49)A    50)B
- Mr. K. Kumar
Senior Faculty
Hyderabad
ph:9492956214