Are you looking for PTU university previous year question papers of BBA? You can find here previous year question papers of PTU University. This is the question paper of PTU BBA 3rd semester Business statistics held on may 2012. You can download the question paper for your exam preparations.

Note:
1 . SECTION-A is COMPULSORY.
2 . Attempt any FOUR questions from SECTION-B.

SECTION-A (10 × 2 = 20 Marks)

1. (a) What is the relation between Mean, Median and Mode ?
(b) What is Binomial Distribution ? Discuss its features.
(c) What are the limitations of Index numbers ?
(d) Differentiate between Arithmetic Progression and Geometric
Progression.
(e) What are the merits of diagrammatic representation of statistical
Data ?
(f) Differentiate between Mean Deviation and Standard Deviation.
(g) Differentiate between Correlation and Regression.
(h) Define Coefficient of Variation.
(i) Discuss the classical ap proach of probability.
(j) Discuss the properties of Normal Distribution.

SECTION-B (4 × 10 = 40 Marks)
2. (a) Define Standard Deviation. Discuss its properties.
(b) In two factories A and B, engaged in the same industry in the area,
the average week wages in rupees and the S.D. are as follows :
Factory Average S.D. No. of employees
A 34.5 5.0 476
B 28.5 4.5 524
(i) Which factory A or B pays out a larger amount on weekly
wages?
(ii) Which Factory A or B has greater variability in individual
wages?

3. In a genetic survey, the data of height of fathers (in cms) and height
of sons (in cms) were collected. Data are as follows :
Father 165 166 167 167 168 169 171 173 170 166
Son 167 168 164 168 171 170 169 170 169 165
Find the two lines of regression. Calculate correlation coefficient and
expect the average height of son when the height of father is
168.2 cms.

4. Given the following data.
2009 2010
Price Quantity Price Quantity
Rice 4 6 5 6
Oil 30 2 33 2
Tea 8 1 9 1
Washing powder 6
1
/
2 8 1
Sugar 4 4 5 5
Milk 4 3 6 3
Test the adequacy of index by Time Reversal Test.
Items

5. (a) State the different methods used for diagrammatic representation
of statistical data and indicate briefly the advantages and
disadvantages of each one of them.
(b) In the frequency distribution of 100 families given below, the
number of families corresponding to expenditure groups 20-40
and 60-80 are missing from the table. However, median is known
to be 50. Find the missing frequencies.
Expenditure 0-20 20-40 40-60 60-80 80-100
No. of families 14 ? 27 ? 15

6. Estimate the trend value by the 4-yearly moving averages method for
the following data:
Year 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Value 12 18 26 32 40 60 76 94 100 108 98 90

7. (a) What do you mean by probability? Discuss the Laws of probability?
(b) A salesman is known to sell a product in 3 out of 5 attempts
while another salesman in 2 out of 5 attempts. Find the probability
that
(i) No sale will take place when they both try to sell the product
(ii) Either of them will succeed in selling the product.

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2012 Punjab Technical University B.B.A BBA 3rd semester Business statistics MM: 60 Question paper

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