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**Anna University Question Paper. Code :80312- I**

**Reg. No.**

**M.B.A. DEGREE EXAMINATION, JANUARY 2014**

**First Semester**

**BA 7102 — STATISTICS FOR MANAGEMENT**

**(Regulation 2013)**

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**PART A — (10 x 20 marks)**

1. Give two examples for categorical variables.

2. What is a random variable?

3. Why does sampling introduce errors in research studies?

4. State the central limit theorem.

5. Define .a hypothesis.

6. Distinguish between paiametric and non parametric tests.

7. Name two non parametric tests of association.

8. Distinguish between Mann Whitney test and Kruskal Walls tests.

9. Distinguish between seasonal variations and cyclital variations in a time series data.

10. What is nonsense correlation?

**PART B — (5 x 16 = 80 marks)**

11 (a) The ages of a sample of 8 faculty members selected from the School of Business Administration are shown below. Faculty Age 1 r 42 2 30 3 '73 4 50 5 ,51 6 37 7 42 8 59

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