Statistical Analysis Question Paper 2023 [DODLDU MCOM 4TH SEM Question Papers]

Statistical Analysis Question Paper 2023
[DODLDU MCOM 4TH SEM Question Papers]

2023 (Held in 2024)

COMMERCE

Paper: COM-401 (Statistical Analysis)

Full Marks: 80

Time: 3 hours

The figures in the margin indicate full marks for the questions

1. (a) State the probability theory. Describe the various approaches to probability measure. 4+11=15

Or

(b) Write a critical note on Bayes’ probability.                      15

2. (a) What is meant by theoretical frequency distribution? Discuss the salient features of the binomial, Poisson and normal distributions.      15

Or

(b) Given:

No. of pages:	142	156	69	27	5	1
No. of mistakes / page:	0	1	2	3	4	5

The distribution of typing mistakes by the typist is given above. Assuming Poisson model, find the expected frequencies.

3. (a) What is an estimator? Discuss with examples the features of good estimator. 4+11=15

Or

(b) Compare and contrast point estimation and interval estimation.         15

4. (a) What is the difference between null hypothesis and alternative hypothesis? Select a problem and identify all the elements of hypothesis testing in the context of the problem. 7+8=15

Or

(b) Discuss the rules of framing sample size.

5. Answer any two of the following:      10x2=20

(a) Compare and contrast parametric and non-parametric tests.

(b) Explain Spearman’s rank correlation test with examples.

(c) Explain chi-square test for goodness of fit.

(d) Explain Kruskal-Wallis test with example.

(e) Discuss the steps you shall follow while writing a research report.

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