Jawaharlal Nehru Technological University Hyderabad 2010-1st Sem M.B.A -ester Supplementary s STATISTICS FOR MANAGEMENT - Question Paper

Code No: 11003
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MBA-I Semester Supplementary exams July 2010
STATISTICS FOR MANAGEMENT
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal Marks
- - -
1. discuss the difference ranging from classification and Tabulation of data and write a brief
note on format of a table and also discuss the rules for entering the data into a table.
2. discuss various methods for collecting primary and secondary data.
3. discuss various kinds of Scales used in Research.
4. compute Mean, Median and Mode from the subsequent data
Mid Values 115 125 135 145 155 165 175 185 195
Frequencies six 25 48 72 116 60 38 22 3
5. The subsequent facts were gathered before and after an industrial dispute
Before Dispute After Dispute
No. of Workers
Mean Wages
Median Wages
Variance of Wages
516
Rs.49.50
Rs.52.70
100
508
Rs.51.75
Rs.50
121
Compare the position before and after the dispute in respect of
a) Total Wages b) Standard Deviation c) Skew ness
d) Median Wages e) Coefficient of variation f) Modal Wages
6.a) discuss various kinds of Index Numbers and methods for construction of index
numbers
b) compute 4 yearly moving avg. from the subsequent data,
Year 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Value 50 36.5 43 44.5 38.9 38.1 32.6 41.7 41.1 33.8
Cont…2
7. 5 kinds of fertilizers are applied to 4 varieties of potatoes, every planted on five
plots of land of the identical size and fertility. The yields are shown in the subsequent data,
Fertilizers
Potatoes
1 two three four 5
A 34 38 44 40 42
B 50 38 46 52 44
C 42 36 50 46 48
D 38 44 52 36 42
Test whether i) The effects of fertilizers and ii) the effects of potato varieties are
significant on the yield of potatoes.
8. 4 coins are tossed 320 times and the number of heads found were recorded as
follows
No of Heads 0 one two three 4
Frequency 15 102 108 68 27
Can we regard all the coins as unbiased?
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Earning:   Approval pending.