BUSINESS STATISTICS IMPORTANT QUESTIONS LIST

DEGREE STATISTICS FOR B.COM STUDENTS IMPORTANT QUESTIONS

1. BUSINESS STATISTICS IMPORTANT
QUESTIONS
Unit-1
1.Define statistics? Explain functions, importance and
limitations?
2.What is primary data? Explain the primary data collecting
methods?
3.What is secondary data? Explain the secondary data methods?
4.What is questionnaire? Write its advantages and dis-
advantages?
5.What is tabulation? What are the steps involve in tabulation?
6.What is classification?
7.What is scheduling? Write its advantages and dis-advantages?
Unit-2
1.What do you mean by measures of central tendency? Explain
its measures?
2.What is arithmetic mean (A.M)? Write it advantages and dis-
advantages?
3.What is geometric mean (G.M)? Write it advantages and dis-
advantages?
4.What is harmonic mean (H.M)? Write it advantages and dis-
advantages?
5.What is the calculation procedure to calculate median and
mode?
Unit-3
1.What do you mean by measures of dispersion? Explain its
measures?
2.What is range? Write its advantage and dis-advantages?
3.What is S.D? Write its advantage and dis-advantages?
Unit-4
1.What is correlation? What are the types of correlation?
2.Write the difference between correlation and regression?
Unit-5
1.What is index number? What are the methods to calculate the
index numbers?
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2. 2.What is time series? What are the components of time series?
3.What do you mean seasonal variations? Write its uses?
4.What do you mean by cyclical variations? Write its uses?
IMPORTANT PROBLEMS IN BUSINESS STATISTICS
UNIT-1
1.
****
Prepare a histogram, frequency polygon and frequency curve
from the following data.
0-
10
10-2020-3030-
40
40-
60
1317 15 13 10
2.
****
Determine the modal or mode value for the following data.
0-100 100-200 200-300 300-400 400-500 500-600
12 18 27 24 10 6
3.
***
Determine the median value for the following data by using
less than curve and greater than curve
100-200 200-300 300-400 400-500 500-600 600-700
12 18 30 42 60 78
4.Prepare the sub-divided diagram and pi diagram for the
following data.
Expenditu
re
food Clothin
g
Fuelrenteducatio
n
Miscellaneo
us
Family A 3300 1080 300 720 480 420
Family B 4500 1080 450 900 900 720
UNIT-2
1.***find the missing frequency for the following data by using
A.M=50,N=120
0-20 20-40 40-60 60-80 80-100
17 F1 32 F2 19
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3. 2.***find the missing frequency for the following data by using
median (M)=46,N=229
10-20 20-30 30-40 40-50 50-60 60-7070-80
12 30 F1 65 F2 25 18
3.****calculate media for the following data
0-10 10-20 20-30 30-40 40-50
5 7 10 8 5
4.***calculate mode for the following data
0-10 10-20 20-30 30-40 40-50
9 7 10 4 5
5.Calculate A.M for the following data
1-100 101-
200
201-
300
301-
400
401-
500
19 27 15 34 5
Unit-3
1.Calculate Q.D and co-efficient of Q.D for the following data
10-20 20-30 30-40 40-50 50-60 60-7070-80
12 30 10 13 12 25 18
2.Calculate M.D and Co-efficient of M.D for the following data by
using median and mean.
100-200 200-300 300-400 400-500 500-600 600-700
2 10 3 42 60 78
3.Calculate S.D and co-efficient of variation for the following
data
0-200 200-400400-600600-800800-
1000
2 10 3 42 60
4.Calculate skewness and co-efficient of skewness for the
following data by using bowleys method.
Wages (Rs) 55-58 58-61 61-64 64-67 67-70
No. of workers 12 17 23 18 10
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4. 5.Calculate skewness and co-efficient of skewness for the
following data by using karl-pearson method.
Marks 0-
10
10-
20
20-
30
30-
40
40-
50
50-
60
60-
70
70-
80
No. of
students
1040 20 0 10 40 16 14
Unit-4
1.Calculate co-efficient of correlation from the following data
according to karl-pearson
X500 1000 1500 2000 2500 3000 3500
Y100 200 300 400 500 600 700
2.Calculate co-efficient of correlation from the following data
according to spearman’s (rank method).
X 415 434 420 430 424 428
Y 330 332 328 331 327 325
3.Calculate co-efficient of correlation from the following data
according to spearman’s (rank method).
X 3 5 8 4 7 10 2 1 6 9
Y 6 4 9 8 1 2 3 10 5 7
4.Calculate co-efficient of correlation from the following data
according to spearman’s (rank method).
MARKS IN
ENGLISH
4046546070808285859095
MARKS IN TELUGU 4545504340755572654270
5.Find the two regression line (equations) for the following data.
X 2 6 4 3 2 2 8 4
Y 7 2 1 1 2 3 2 6
Unit-5
1.Using laspeyre’s, paache’s, bowley’s, fisher’s and marshall
edge worth formulae calculate indices for the 2005 taking
2004 as base.
commodity 2004 2005
price quantity price quantity
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5. A 8 10 10 9
B 10 12 15 12
C 12 8 18 7
D 15 6 16 8
2.Calculate the simple index numbers for the following data
commodity Base year Current year
A 36 39
B 40 40
C 40 46
D 46 50
F 37 40
G 40 49
I 37 50
3.Calculate the simple index number for the following data
Grains 2006 2007 2008
Wheat 4950 5040 5380
Maize 3060 4080 4260
Barley 1024 1526 1824
Paddy 2460 3040 2580

4.Fit a trend line to the following data by the free hand graph
method.
Year 199
8
199
9
200
0
200
1
200
2
200
3
200
4
200
5
200
6
Production
(tones)
40 44 48 42 46 50 46 52 50
5.Apply the method of semi averages to determine trend line of
the following data and estimate the value for 1998
Year 200
1
200
2
200
3
200
4
200
5
200
6
Production
(tones)
101211151416
6.Draw the trend line and actual line for the following data by
using moving averages method.
Year 198
9
199
0
199
1
199
2
199
3
199
4
199
5
199
6
199
7
199
8
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6. Production
(tones)
42444650484450525452
7.For the following given data compute trend line by method of
least squares. Also draw graph.
Year 200
3
200
4
200
5
200
6
200
7
Production
(tones)
4 11172026
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M.RAJASEKHAR REDDY
CONTACT:8688683936