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### Bba Ii Semister Statistics 2009

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# Bba Ii Semister Statistics 2009

By | Jan. 2012
Page 1 of 6
Total No. of Questions : 5]

[Total No. of Printed Pages : 7

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B. B. A. ( Semester - II ) Examination - 2009
BUSINESS STATISTICS (2008 Pattern) Time : 3 Hours] Instructions : (1) All questions are compulsory. (2) All questions carry equal marks. (3) Figures to the right indicate full marks. (4) Use of statistical tables and private calculator is allowed. (5) Notations have their usual meanings. [Max. Marks : 80

Q.1) (A)

Attempt any four of the following : (a) (b) Explain in brief uses of Statistics in Industry.

[4x4=16]

What do you mean by measures of Central Tendency ? Give a real life situation where Mode is preferable to Arithmetic Mean. Calculate Karl - Pearson’s Coefficient of Correlation from the following information : n = 10, Σx = 250, Σy = 300, Σxy = 7,900, Σx2 = 6,500, Σy2 = 10,000

(c)

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1

P.T.O.

(d)

Draw Frequency Polygon for the following frequency distribution : Age in Years 0 – 10 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 Number of Persons 4 16 30 20 14 10 4

(e)

Solve graphically the following Linear Programming Problem (L.P.P.) : Max. Z = 20x + 17y Subject to 2x + 2y 12x + 10y x, y 0 22 120

(f)

Calculate Standard Deviation (S.D.) for the frequency distribution of marks of 100 candidates given below : Marks 0 – 20 20 – 40 40 – 60 60 – 80 80 – 100 No. of Candidates 5 12 32 40 11

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Contd.

Q.2) Attempt any four of the following : (a) (b) How does SRSWR differ from SRSWOR ?

[4x4=16]

Calculate Correlation Coefficient between X and Y, given equations of lines of regression as follows : X + 2Y = 5 2X + 3Y = 8

(c)

Calculate Median for the following frequency distribution : Speed (in kms.) 60 – 65 65 – 70 70 – 75 75 – 80 80 – 85 85 – 90 Number of Cars 12 32 50 85 15 6

(d)

The management of hotel has employed 5 cooks and 10 waiters. The monthly salaries of a cook and a waiter are Rs. 3,000 and Rs. 2,500 respectively. Find mean salary of the...

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