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F.Y.BMS
BUSINESS
STATISTICS
1) _____
are the typical values within the range of the data, that lies within the
smallest and the largest observation.
a) Dispersion
b) Averages
c) Frequency
d) No. of
Observations
ANS:
b
2) _____
cannot be calculated in case of distribution with open end classes.
a) Median
b) Mode
c) Arithmetic
Mean
d) Quartiles
ANS:
c
3) The
mean of 10 items was 50. The value of largest item was 65. It was later found
that is actually 60. Therefore the correct mean is _____.
a) 50.3
b) 55.6
c) 65
d) 49.5
ANS:
d
4) 14 is
the mean of 7 observations. 20 is the mean of 8 observations. The mean of a
combined set is given by _____.
a) 17
b) 17.2
c) 15
d) 34
ANS:
b
5) The
sum of N observations is 630 and their mean is 42, then the value of N is
_____.
a) 25
b) 20
c) 15
d) 15
ANS:
d
6) The median
of the given series of observations 46, 33, 34, 38, 40, 52, 56, 58 is
a) 40
b) 52
c) 43
d) 56
ANS:
c
7) The
variant values which divides the series of observation into four equal parts
are called _____.
a) Quartiles
b) Median
c) Mode
d) Deciles
ANS:
a
8) The
average marks of boys are 65 and that of girls are 70. The average marks of
boys and girls
a) 1:03
b) 2:03
c) 3:01
d) 3:02
ANS:
d
9) combines
is 67. The ratio of number of boys to number of girls is _____For a grouped
frequencydistribution _____ is equal to the value corresponding to cumulative frequency
N/2
a) 1st
Quartile
b) Median
c) 3rd
Quartile
d) None
ANS:
b
10) Mode
of 30, 50, 40, 30, 25, 20, 30, 45, 15, 28 is _____.
a) 30
b) 25
c) 40
d) 50
ANS:
a
11) Ogive
curve occur for
a) More
than type distribution
b) Less
than type distribution
c) Both
(a) and (b)
d) None
of (a) and (b)
ANS:
c
12) Ogive
for more than type and less than type distribution intersect at
a) Mean
b) Median
c) Mode
d) None
of the above
ANS:
b
13) With
the help of histogram we can prepare
a) Frequency
Polygon
b) Frequency
Curve
c) Frequency
Distribution
d) All
the above
ANS:
d
14) With
the help of histogram, one can determine
a) Median
b) Mode
c) Mean
d) All
the above
ANS:
b
15) In
case of open-end class intervals, _____ cannot be calculated
a) Median
b) Mode
c) Third
Quartile
d) Arithmetic
Mean
ANS:
d
16) If an
extreme value 100 is changed to 1000, the following measure does not get
affected : (i) Median, (ii) Arithmetic Mean, (iii) Mode, (iv) 1st Quartile, (v)
3rd Quartile
a) (i),
(iv) and (v)
b) Only
(ii)
c) All
except (ii)
d) (i)
and (ii)
ANS:
c
17) The
arithmetic mean of 150, 250, 350, 450, 550 and 650 is _____.
a) 350
b) 400
c) 250
d) 300
ANS:
b
18) If
each observation in a sample of „n‟ values is 7, then the arithmetic mean of
this sample is _____.
a) n
b) 7
c) 7/n
d) 7n
ANS:
b
19) _____
can be used for further algebraic treatment
a) Median
b) Arithmetic
Mean
c) 1st
Quartile
d) Mode
ANS:
b
20) If, in
a set of 30 observations, each value is increased by 10, the arithmetic mean
increases by _____.
a) 10
b) 3
c) 300
d) 3.33
ANS:
a
21) If a
frequency distribution has open end classes, one cannot calculate
a) Median
b) Mode
c) Mean
d) Quartiles
ANS:
c
22) The
sum of n observations is 630 and their mean is 42, then the value of n is
_____.
a) 25
b) 20
c) 30
d) 15
ANS:
d
23) _____
a/are merit/s of the measure of central tendency „arithmetic mean‟.(i) It is
not affected extreme values, (ii) It can be located graphically, (iii) It is
easily calculated, (iv) It is capable of further mathematical treatment.
a) (iii)
b) (ii)
and (iii)
c) (iii)
and (iv)
d) All of
the above
ANS:
c
24) If an
extreme value 100 is changed to 1000, the following measure does not get
affected : (i) Median, (ii) Arithmetic Mean, (iii) Mode, (iv) 1st Quartile, (v)
3rd Quartile
a) (i),
(iv) and (v)
b) Only
(ii)
c) All
Except (ii)
d) (i)
and (ii)
ANS:
c
25) In
case of open-end class intervals, _____ cannot be calculated.
a) Only
Median
b) Arithmetic
Mean and Mode
c) All
Quartiles
d) Only
Arithmetic Mean
ANS: d
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