UHEC - Basic Research Methods

For each of these questions, choose the option (A, B, C or D) that is TRUE.
1. The range of a sample gives an indication of the

(A) way in which the values cluster about a particular point
(B) number of observations bearing the same value
(C) maximum variation in the sample
(D) degree to which the mean value differs from its expected value.
2. The observation which occurs most frequently in a sample is the

(A) median
(B) mean deviation
(C) standard deviation
(D) mode
3. What is the median of the sample 5, 5, 11, 9, 8, 5, 8?

(A) 5
(B) 6
(C) 8
(D) 9
Items 4 - 5 refer to the information below.
The following scores were obtained by eleven footballers in a goal-shoot competition:

5 3 6 8 7 8 3 11 6 3 2
4. The modal score was
(A)3
(B)6
(C)8
(D) 11
5. The median score was

(A)3
(B)6
(C)8
(D) 11
1
Items 6 - 8 refer to the graph below.
NUMBER OF PACKETS FOR POSTAGE

HAVING A CERTAIN WEIGHT
20
18
16
Number of 14
Packets 12
10
8
6
4
2
0
9.8 9.9 10 10.1 10.2 10.3 10.4 10.5 10.6
Weight of Packets/kg
6. How many packets were weighed?

(A) 9
(B) 14
(C) 65
(D) 92
7. What is the frequency of the median weight?

(A) 7
(B) 8
(C) 12
(D) 14
8. What is the modal weight?

(A) 9.9 kg
(B) 10.1 kg
(C) 10.2 kg
(D) 10.5 kg
2
9. The mean of ten numbers is 58. If one of the numbers is 40,
what is the mean of the other nine?
(A) 18
(B) 60
(C) 162
(D) 540
10. The mean of 11 numbers is 7. One of the numbers, 13, is deleted.

What is the mean of the remaining 10 numbers?
(A) 7.7
(B) 6.4
(C) 6.0
(D) 5.8
11. A researcher is curious about the IQ of students at the University of Kisubi. The entire group of
students is an example of a:
(A) Parameter
(B) Statistic
(C) Population
(D) Sample
12. Statistical techniques that summarize and organize the data are classified as:
(A) Population statistics
(B) Sample statistics
(C) Descriptive statistics
(D) Inferential statistics
13. In a 500m speed skating race, time results would be considered an example of which level of
measurement?
(A) Nominal
(B) Ordinal
(C) Interval
(D) Ratio
14. The median is always:
(A) The most frequently occurring score in a data set
(B) The middle score when results are ranked in order of magnitude
(C) The same as the mean
(D) The difference between the maximum and minimum scores.
15. The seminar rooms in the library are identified by the letters A to H. A researcher records the
number of classes held in each room during the first semester. What kind of graph would be
appropriate to present the frequency distributions of these data?
(A) Histogram
(B) Scatterplot
(C) Bar chart
(D) Box plot
16. A set of scores is presented in a histogram. The histogram shows a series of bars that tend to decrease
in height from left to right. What is the shape of the distribution?
(A) Leptokurtic
(B) Positively skewed
(C) Negativity skewed
(D) Normal
17. What is the median for the following scores: 2, 5, 4, 1, 8?

(A) 3.5
(B) 4
(C) 4.5
(D) 7
16. Which of the following sets of scores has the greatest variability (range)?
A. 2, 5, 8, 11
B. 13, 13, 13, 13
C. 20, 25, 26 ,27
D. 42, 43, 44, 45
17. Which of the following statements is the most accurate description for the concept of standard
deviation?
A. The total distance from the smallest score to the highest score.
B. The square root of the total distance from the smallest score to the highest score.
C. The squared average distance between all scores and the mean.
D. The average distance between a score and the mean.
18. What is the variance for the following set of scores: 2, 2, 2, 2, 2.

A. 0
B. 2
C. 4
D. 25
20. Normally distributed data are normally referred to as:
A. Bell-shaped
B. Asymmetrical
C. Skewed
D. Peaked
Section B: Choose any two question from the following section. Each questions carries 30 marks
Question 11:
a) What is literature review?
b) What are the reasons for taking literature review?
c) What is systematic literature review?
d) Discuss the steps in the literature review process
4
Question 12:
a) Differentiate between population and sample.
b) Differentiate between probability sampling and non-probability sampling.
c) List the probability sampling methods.
d) Enumerate the non-probability sampling methods.
Question 13:
Name for types of sampling in qualitative research and provide a descriptive example of instances in
which each may be used. Discuss what they have to offer in terms of representativity and
generalisability.
Question 14:
As a student of the University of Kisubi in the programme of Higher Education Certificate, discuss the
importance of taking a course in basic research methods.
Good Luck

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For each of these questions, choose the option (A, B, C or D) that is TRUE.

1. The range of a sample gives an indication of the

2. The observation which occurs most frequently in a sample is the

3. What is the median of the sample 5, 5, 11, 9, 8, 5, 8?

Items 4 - 5 refer to the information below.

The following scores were obtained by eleven footballers in a goal-shoot competition:

5. The median score was

NUMBER OF PACKETS FOR POSTAGE

6. How many packets were weighed?

7. What is the frequency of the median weight?

8. What is the modal weight?

10. The mean of 11 numbers is 7. One of the numbers, 13, is deleted.

17. What is the median for the following scores: 2, 5, 4, 1, 8?

18. What is the variance for the following set of scores: 2, 2, 2, 2, 2.

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