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MFN 009 Solved Assignment 2021-22


MFN 009 Solved Assignment 2021-22

Research Methods and Biostatistics

MFN 009 Solved Assignment 2021-22 : All assignments are in PDF format which would be send on email/WhatsApp (9958676204) just after payment.

Course Code: MFN 009

Assignment Code: MFN 009/AST-4/TMA-4/2021-22

Maximum Marks: 100

This assignment is based on Units 1 -19 of the MFN-004 Course.

Section A -Descriptive Questions


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.


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.


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.


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

Calculation the mean, standard deviation and variance for the hemoglobin levels reported above.

b) Differentiate between two-tailed and one-tailed tests of significance.


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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):


6. Briefly discuss the characteristics of a good questionnaire. What are the advantages and limitations of using a questionnaire in a research study?


b) Briefly discuss different types of rating scales used in epidemiological studies.


7. a) Differentiate between the following research designs, giving appropriate examples.


i. Analytical study - Descriptive study

ii. Observational study - Experimental study

iii. Case – Control study - Intervention study

iv. Single blind study - Double blind study

b) Explain briefly the significance of control, manipulation and observation in an experimental study


8. The nutrition score of 8 males and 12 girl students of M.Sc. (DFSM) programme is given herewith:

Males: 10, 12, 13, 10, 14, 15, 10, 12

Females: 08, 12, 16, 14, 15, 12, 13, 15, 08, 13, 10, 09

Based on the data given here with:

i) Calculate the standard error of the difference between the means of the two groups.


ii) Test the significance of the difference between the mean nutrition score of males and females at 0.05 level of significance.


b) Differentiate between validity and reliability of a research tool.


Section B - OTQ (Objective Type Questions)

1. a) Define the following:


i) Double blind trial

ii) Percentiles

iii) Placebo

iv) Stratified Sampling

v) Proximity error

vi) Normal Distribution

vii) Inductive analysis

viii) Errors in statistical decisions

ix) Degree of freedom

x) Limit of accuracy

2. Differentiate betweenthe following:


i) ANOVA and Factor Analysis

ii) Bar Graph and Histogram

iii) Parametric and Non-Parametric Test

iv) t-Test and F-Test

v) Descriptive studies and Analytical studies

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MFN 009 Solved Assignment 2021-22 : All assignments are in PDF format which would be send on email/WhatsApp (9958676204) just after payment.


Dear Learner,

You have to submit one assignment in each course, i.e. MFN 009, MFN 009. All these are Tutor Marked Assignments (TMAs). Before attempting the assignments, please read the instructions provided in the Programme Guide carefully.

Kindly note, you have to submit these assignments to the Coordinator of your Study Centre within the stipulated time for being eligible to appear in the term-end examination. You must mention your Enrolment Number, Name, Address, Assignment Code and Study Centre Code on the first page of the assignment. You must obtain a receipt from the Study Centre for the assignments submitted and retain it. Keep photocopies of the assignments with you.

After evaluation, the assignments have to be returned to you by the Study Centre. Please insist on this and keep a record with you. The marks obtained by you will be sent by the Study Centre to the Student Evaluation Division at IGNOU, New Delhi.

Guidelines for Doing Assignments

There are five questions in each assignment, all carry equal marks. Attempt all the questions in not more than 500 words (each). You will find it useful to keep the following points in mind:

Planning: Read the assignments carefully. Go through the units on which they are based, make some points regarding each question and then rearrange them in a logical order

Organization and Presentation: Be analytical in your selection of the information for your answer. Give adequate attention to the introduction and the conclusion. Make sure that your answer is logical and coherent; has a proper flow of information.

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