IGNOU MSCDFSM MFN 9 Research Methods and Biostatistics Solved Assignment ENGLISH

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MFN 009 (July 2026) - ENGLISH

ASSIGNMENT 4 (TMA-4)
Research Methods and Biostatistics (MFN-009)
Course Code: MFN-009
 Assignment Code: MFN-009/AST-4/TMA-4 /26-27
Last Date of Submission: 15th March, 2027
Maximum Marks: 100
This assignment is based on Units 1 -14 of the MFN-009 Course.
Section A - Descriptive Questions (80 marks)
There are eight questions in this part. Answer all questions.
1. a) Define research. What do you understand by the terms -Level of Significance and Power?
Discuss their relevance in sample size determination.
b) Define hypothesis. Enumerate basic characteristics of a good hypothesis.
(6)
(4)

2. a) Explain the following with examples:
i. Clinical trials
ii. Double bind trials
iii. Correlation studies
b) What do you understand by probability and non-probability sampling? Explain the various
methods of non-probability sampling.
(2+2+2)

 (4)
3. a)Differentiate between the following highlighting their uses in epidemiological studies:
i. Open ended and close ended questionnaire
ii. Cluster sampling and stratified sampling
iii. Cross sectional and case control study
b) Explain the various types of interviews? Write down different techniques used to conduct
interview.
(2+2+2)

(4)
4. a) Given below are the hemoglobin level recorded for 10 subject in a community study:
8.8, 6.4, 10.3, 11.2, 12.5, 8.5, 9.0, 10.0, 11.0, 12.0
Calculate the mean, standard deviation and variance for the hemoglobin levels reported
above.
b) Differentiate between two-tailed and one-tailed tests of significance.
(2+3+3)

 (2)
5. a) Define the concept of confidence interval and degree of freedom with the help of
an example.
b) Test the difference in the attitude of male and female subjects using chi-square
analysis towards eating junk food based on the distribution given here with (at 0.5
level of significance):
 Positive Attitude Negative Attitude Total
Male 8 7 15
Female 7 5 12 

MFN 009 (July 2025) - ENGLISH

ASSIGNMENT 4

(TMA-4)

Research Methods and Biostatistics

Course Code: MFN-009

Assignment Code: MFN-009/AST-4/TMA-4/2025-26

Last Date of Submission: 15th March, 2026

Maximum Marks: 100

This assignment is based on Units 1 -14 of the MFN-009 Course.

(80 marks)

Section A - Descriptive Questions

There are eight questions in this part. Answer all questions.

1.a) Explain briefly the steps in research process you will use in conducting your MSCDFSM dissertation.

b) Differentiate between an objective and a hypothesis, giving example.

c) Define epidemiology. List any two purposes/aims of epidemiology.

2. a) What is a correlational study? Explain with example. List the strengths and limitations of this study design.

b) Explain the following with examples:

i) Characteristics of Experimental Research

ii)Issues in the design of Case-Control study

iii) Cohort study.

3a) How is random sampling different from incidental sampling? Explain the process of random sampling.

b) Enlist the different types of scales used in behavioural sciences for data measurement ?

c) Give the characteristics of:

i) Good research tool

ii)Good sample

4. a) Enumerate the two types of data used in nutritional research. Explain with examples.

b) Explain the various types of documents used as a research tool.

(4) c) Explain briefly tabulation and organization of quantitative data, giving examples.

5.a) Enumerate the graphs you will use for nominal and ordinal data.

b) Present the methods for analyzing descriptive qualitative data

. c) Write a short note on "Measures for validity of diagnostic tests".

6.a) Scores (maximum marks 100) of learners (n=10) enrolled in MFN-009 is given below:

50,66,49,74,57,49,50,82,39,59

Calculate the mean, median, standard deviation and variance for the above data.

c) Describe the assumptions on which non-parametric tests are based?

7.a) In a study conducted on girls in age range 13-15 years (n=200) the results revealed the dietary intake of iron (mean (SD)) was 20 (4.73) mg. Compute the

standard error of mean.

b) The marks (maximum marks 50) of students (n=10) are given below:

Theory marks (x): 25

34

29

36

25

39

21

24

39

37

44

35

Practical marks (y):

25

38

31

28

36

32

47

28

Find the correlation coefficient between x and y.

8. a) What is SPSS statistical tool? Discuss the features of SPSS for Windows.

b) What do you understand by Z-score? What is the cut-off Z-score which is considered low and very low?

Section B - OTQ (Objective Type Questions)

1. Define the following:

1) Bias

ii) Cohort

iii) Prevalence

iv) Power of the study

v) Independent variable

vi) Checklist

Nutrigenomics

viii) Factor Analysis

ix) Discrete variable

x) Two tailed test

2. Differentiate between the following:

i) Single blinding and double blinding

ii) Participant observation and non participant observation

iii) Prospective and Retrospective Study

iv) Close ended and Open ended questionnaire

v) Graphic Scale and Standard Scale

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