NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: AEM 501
COURSE TITLE: STATISTIC AND RESEAARCH METHODS IN EXTENSION
TIME ALLOWED: 3HOURS
INSTRUCTION: ANSWER FIVE (5) QUESTIONS ONLY. ALL QUESTIONS CARRY EQUAL MARKS.
1a. Briefly state what you understand by research and extension (10 marks)
1b.Dffrenciate between the following:
I. Fundamental research;
II. Applied research;
III. Action research. (10 Marks)
2a.In what ways does a survey research differs from an ex-post-facto-research. (15 Marks)
2b. State the major objectives of social intervention experiment (5 Marks)
3a. Briefly discuss the criteria for a good hypothesis statement stating the functions of hypothesis in the conduct and analysis of a research. (20Marks)
4a. Discuss fully the factors to be considered when determining the selection of research problem. (12 marks)
4b. List the types of data that can be collected in a social research and discuss fully any two (8 Marks)
5a. Write short notes on the following as relates to the development of a questionnaire.
I. Question order;
II. Question content. (15 marks)
5b. What are the advantages of using secondary data? (5Marks)
6. Briefly differentiate between the following probability sampling types:
I. Simple random sampling;
II. Stratified random sampling;
III. Cluster sampling (20Marks)
7a. List the rules that must be considered constructing a Table. (5Marks)
Given the following data (X), compute the X2 and calculate the variance, stating clearly all the steps involved.
| X | X2 |
| 9 | |
| 8 | |
| 7 | |
| 6 | |
| 5 | |
| 4 | |
| 3 |
7b. Briefly explain five (5) urban settlement characteristics.
7c. Explain five (5) factors of resistance of change.
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