SAMPLE Quiz
#1: Statistics Math 340
.
.
Directions:
This is a sample quiz  it has multiple choice, True/False, and fill in the blank answers, just
like the real quiz. Select the option that BEST represents the correct
answer. RECOMMENDATION: Do these problems to see how well you understand
the material in this class! Don't look at the answers until you are
done. If there are any
questions, contact me. 
(1.) Data were
collected on the number of minutes spent cooking a meal. The data are
as follows: 8, 10, 15, 25, 30, 40, 12, 20, and
19. What is the range of this data?
a. 24 
Your ANSWER? 
(2.) When would a
student use a grouped frequency distribution to organize the data she has
collected? a. When the data she is using is
categorical. 
Your ANSWER? 
(3.) If a
colleague came to you and asked you to recommend a type of graph to represent
the cumulative frequencies for the classes in the study he’s been
working on, you would tell him to use a(n): a. ogive 
Your ANSWER? 
(4.) Find the
mean, median, and mode for the following data set: 4, 17, 9, 11, 26, 11, 13, 7, 22,
11 a. Mean = 15.1, Median = 11, Mode =
13 
Your ANSWER? 
(5.) When would
there be an advantage to using the median instead of the mean when computing
the measure of central tendency of a particular data set? a. When the data set is openended. 
Your ANSWER? 
TRUE FALSE

Your ANSWER? 
(7.) Read this carefully!
The following is a sample of n=9
measurements: 8.0, 2.0, 2.0, 7.0, 4.0, 6.0, 5.0, 3.0,
4.0 Calculate the Standard Deviation for
this set.__________________________________ HINT: There's a difference in the standard deviation between a sample and
a population! 
Your ANSWER? 
The following set of
numbers are used for the next three questions:
8.0, 7.0, 9.0, 4.0, 8.0, 10.0, 9.0,
9.0, 3.0, 5.0

Your ANSWER? 

Your ANSWER? 

Your ANSWER? 
Extra Credit.
A sample has a mean of 115 and a
standard deviation of 22. a. 49  181 
Your ANSWER? 

SAMPLE ANSWERS
(1.) Data were
collected on the number of minutes spent cooking a meal. The data are
as follows: 8, 10, 15, 25, 30, 40, 12, 20, and
19. What is the range of this data?
a. 24 
ANSWER : 40 is
the high #, and 8 is the lowest #. Thus, 408 is 32. C. 32 
(2.) When would a
student use a grouped frequency distribution to organize the data she has
collected? a. When the data she is using is
categorical. 
ANSWER B. When the range of the data is large. 
(3.) If a
colleague came to you and asked you to recommend a type of graph to represent
the cumulative frequencies for the classes in the study he’s been
working on, you would tell him to use a(n): a. ogive 
ANSWER a. ogive

(4.) Find the
mean, median, and mode for the following data set: 4, 17, 9, 11, 26, 11, 13, 7, 22,
11 a. Mean = 15.1, Median = 11, Mode =
13 
ANSWER d. Mean = 13.1, Median = 11, Mode = 11 
(5.) When would
there be an advantage to using the median instead of the mean when computing
the measure of central tendency of a particular data set? a. When the data set is openended. 
ANSWER d. All of
the above. 
TRUE FALSE

ANSWER FALSE 
(7.) Read this carefully!
The following is a sample of n=9
measurements: 8.0, 2.0, 2.0, 7.0, 4.0, 6.0, 5.0, 3.0,
4.0 Calculate the Standard Deviation for
this set.__________________________________ HINT: There's a difference in the standard deviation between a sample and
a population! 
ANSWER: Did you divide by n1? Standard Deviation is 2.1 
The following set of
numbers are used for the next three questions:
8.0, 7.0, 9.0, 4.0, 8.0, 10.0, 9.0,
9.0, 3.0, 5.0

ANSWER  There is also a secondary mode at 8.0 9.0 (primary) 

ANSWER 

ANSWER 7.2 (7 is also OK if
you are rounding off) 
Extra Credit.
A sample has a mean of 115 and a
standard deviation of 22. a. 49  181 
ANSWER 75% OF THE 