LIS 397C
Spring 2010
Student Number _______________
CALCULATIONS (32 points):
Please use pencil, and put all of your answers on this paper. You must do all of the questions,
and show all appropriate work. Draw a circle around each answer unless otherwise instructed.
1.
(18 points)
x
freq x
12
9
4
2
1
2
1
10
2
3
A sample of users of a major digital library used the following
number of discrete resources in the library:
(a)
In the space above, generate the full frequency distribution of the sample using
class examples as models. Do not circle the frequency distribution. (4 points)
(b)
What is the variable of interest? (1 point)
(c)
What is the unit of analysis? (1 point)
(d)
What is the mean of the distribution? (2 points)
(c)
What is the standard deviation of the distribution? (3 points)
(d)
Generate a 95% confidence interval on µ. Do not circle the CI on µ. (5 points)
(e)
Determine Q1, Q2, and Q3. (4 points)
2. (4 points)
ND (100, 15)
What is the percentile rank of an observation of 116 in this dataset?
3. (8 points)
A sample of nine (9) children’s books in a public library circulated the following
number of times in three months: 3, 0, 2, 0, 5, 4, 10, 2, 2.
Generate a stem-and-leaf plot for this dataset (4 points) and generate the sixfigure summary (4 points) for it. Do not circle the stem-plot, but do put a box
around the summary.
LIS 397.1
Spring 2002
Student Number _______________
CONCEPTS (28 points): use pen, and put your answers on this paper in the space provided.
I. (5 points) Please define five (5) of the following terms (1 point each).
Transferability of qualitative research
Sample statistics
Contingency table
Primary materials in historical research
Inferential statistics
Representativeness of a sample
Focus groups
Effect size
Validity of measures
The normal curve
External validity
Bibliometrics
PLEASE DO NOT WRITE BELOW THIS LINE
II. (8 points)
Discuss the relationship(s) between the terms in four (4) of the following pairs (2
points each):
a. df and the t-distribution
b. variables and units of analysis
c. sampling error and SEµ
d. H0 and inferential statistics
e. µ and 
f. Likert scales and close-ended questions
PLEASE DO NOT WRITE BELOW THIS LINE
LIS 397.1
Spring 2002
Student Number _______________
III. (15 points) Respond to three (3) of the following questions or statements in
the space provided. (5 points each)
a.
What are some ways to ensure data quality in qualitative research?
b.
In your opinion, what is the single most important ethical concern when doing research
in our discipline? Why?
PLEASE DO NOT WRITE BELOW THIS LINE
c.
Over the course of the semester, we discussed five specific ways to triangulate when
doing research. Please name and briefly describe two of those means.
d.
In your opinion, what is the single best way to ensure the utility of research?
Why?
e.
What are anonymity and confidentiality?