A measure of variability describes
A.
Where the data are clustered around
B.
Which data are the most important
C.
How spread out the data are
D.
Which data are appropriate for analysis
E.
What are the typical responses
The College of Arts and Science at Delta University has nine departments.
The number of
faculty in each department (Philosophy, Communication, Asian Studies, Psychology, Sociology,
Education, Political Science, Anthropology, Linguistics, respectively) is shown below.
What is
the median number of faculty in the College of Arts and Science?
8, 12, 9, 15, 17, 11, 13, 14, 7
A.
12
B.
17
C.
4.5
D.
5
E.
There is no median in these data
Which of the following measures of central tendency can be used at any level of measurement?
A. mean
B. mode
C. median
D. standard deviation
E. the mean, the mode, and the median
A description of the number of times that the various attributes of a variable are observed is
called a
A. frequency distribution
B. mean
C. measure of variability
D. sample size
E. statistic
Given the following age distribution, the range is
12, 15, 8, 17, 34, 43, 2, 16, 43, 3
A. 0
B. 9
C. 15
D. 41
E. cannot compute from the information given
Suppose 117 students from previous quarters were asked to estimate how much time they
typically spend watching TV every day (in minutes). Below is the frequency distribution for
these data. What is the
inter-quartile range
for the data on this variable in this sample?
1