NATIONAL OPEN UNIVERSITY OF NIGERIA
Faculty of Agricultural Sciences
Dept. of Agricultural Economics and Extension
2020_2 Examination 1234
Course Code: — AEM501
Course Title: — Research and Statistics in Agricultural Extension
Credit Unit: —-3 Units
Total Score: —-70 Marks
Time Allowed: – 3 Hrs
Instruction: Answer compulsory question 1 (30 mks) and any four (4) questions (10 mks each)
Question One
a. Explain the term “research “ (4 mark )
b. Explain any four (4) factors that can determine the choice of a research problem or topic by
a researcher (8marks)
c. Explain two (2) main sources of data to researcher (5 marks)
d. What is a hypothesis (3 marks)
e. A set of NOUN staff attended a promotion interview and they scored as follows; 56, 57, 58, 67, 68, 69,
86, 85, 85, 78, 79, 85, 65 and 85. From the set of scores, find the
(i) Mean (6 mks)
(ii) Mode (2 mks) and
(iii) The Range of the scores (2 mks)
Question Two
a. Explain two (2) goals of Social Research (4 marks)
b. Mention four (4) functions of hypothesis to a researcher (6 marks)
Question Three
a. Succinctly explain any two (2) types of research (4 marks)
b. As a researcher, State four (4) types of data that are likely to be collected and used in Social Research
(6 marks)
Question Four
a. Outline four (4) characteristics of research problem (6 marks)
b. A questionnaire is different from an interview schedule or recording schedule. State the major
difference between them and in their use (4 marks)
Question Five
a. What is Research Design? (5 marks )
b. What is a sample and when is it used? (5 marks)
Question SixAssume a set of students scored the following in their examination: 45, 54, 35, 78, 89, 53, 89, 57, 45, 57,
82, 57. From the distribution, find the; (i) Mean (ii) Median and (iii) Mode (10 mks)
Question Seven
a. From the same set of scores; 45, 54, 35, 78, 89, 53, 89, 57, 45, 57, 82, 57 of the students, Find;
(i) The first, second, third and fourth quartile (8 mks )
b. Report writing is a must at the end of every research. Describe report writing (2 marks)
Do you need a better understanding of this course? Why not JOIN OUR ONLINE TUTORIAL NOW
