IGNOU BECS 184 Solved Assignment 2024-25 English Medium PDF Download

IGNOU BECS 184 Solved Assignment 2024-25 English Medium Question Paper

BECS 184 : DATA ANALYSIS

Assignment One
Answer the following questions. Each question carries 20 marks
1. (a.) Compute and interpret the correlation coefficient for the following data:

(b) Explain step by step procedure for testing the significance of correlation coefficient.

2. (a.) What is meant by the term ‘mathematical modeling’? Explain with example the various steps involved in mathematical modeling.
(b) What is logic? Why is it necessary to know the basics of logic in data analysis?

Assignment Two
Answer the following questions. Each question carries 12 marks.
3. Differentiate between Census and Survey data. What are the various stages involved in planning and organizing the censuses and surveys?

4. Explain the following:
a. Z score
b. Snowball sampling techniques
c. Type I and type II errors
d. Normal distribution curve

5. a.) “Correlation does not necessarily imply causation” Elucidate.
b.) A study involves analysing variation in the retail prices of a commodity in three principal cities-Mumbai, Kolkata and Delhi. Three shops were chosen at random in each city and retail prices (in rupees) of the commodity were noted as given in the following table:

At significance level of 5%, check whether mean price of the commodity in the three cities are significantly different. (Given F (critical) with 2 and 6 as numerator and denominator degrees of freedom, respectively at 5% level of significance to be 5.14)

6. a.) What are the conditions when t test, F test or Z test are used?
b.) What is multivariate analysis? What are the important points to be kept in mind while interpreting the results obtained from multivariate analysis.

7. Differentiate between:
a. Quantitative and Qualitative Research
b. Phenomenology and Ethnography
c. Observational and experimental method
d. Point estimate and interval estimate

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