QNT 351 FINAL EXAM QUESTION AND ANSWERS
– 2019
30/30
1. What level of measurement is the number of auto accidents
reported in a given month?
A. Interval
B. Ratio
C. Nominal
D. Ordinal
2. If two events A & B are mutually exclusive, what does the
special rule of addition state?
A. P(A or B)=P(A)-P(B)
B. P(A and/or B)=P(A)+P(B)
C. P(A or B)=P(A)+P(B)
D. P(A & B)=P(A)+P(B)
3. For any data set, which measures of central location have only
one value?
A. Mode & standard deviation
B. Mode & mean
C. Mean & median
D. Mode & median
4. What is the variable used to predict the value of another
called?
A. Independent variable
B. Correlation variable
C. Variable of determination
D. Dependent variable
5. A null hypothesis makes a claim about a
A. Type II error
B. Population parameter
C. Sample statistic
C. Sample mean
6. The performance of personal & business investments is measured
as a percentage, return on investment. What type of variable is
return on investment?
A. Continuous
B. Qualitative
C. Attribute
D. Discrete
, QNT 351 FINAL EXAM QUESTION AND ANSWERS
– 2019
7. Twenty randomly selected statistics students were given 15
multiple-choice questions & 15 open-ended questions, all on the
same material. The professor was interested in determining on
which type of questions the students scored higher. This
experiment is an example of
Answer: a paired t-test
8. A listing of all possible outcomes of an experiment & their
corresponding probability of occurrence is called a
Answer: probability distribution
9. A small sample of computer operators shows monthly incomes of
$1,950, $1,775, $2,060, $1,840, $1,795, $1,890, $1,925, & $1,810.
What are these ungrouped numbers called?
Answer: Raw data
10. The mean of any uniform probability distribution is
Answer: (a + b)/2
11. Monthly commissions of first-year insurance brokers are
$1,270, $1,310, $1,680, $1,380, $1,410, $1,570, $1,180, & $1,420.
These figures are referred to as
A. Frequency distribution
B. Frequency polygon
C. a histogram
D. Raw data
12. The test scores for a class of 147 students are computed.
What is the location of the test score associated with the third
quartile?
A. 111
B. 75%
C. 37
D. 74
13. The names of the positions in a corporation, such as chief
operating officer or controller, are examples of what level of
measurement?
A. Interval
B. Ratio
C. Nominal
D. Ordinal
– 2019
30/30
1. What level of measurement is the number of auto accidents
reported in a given month?
A. Interval
B. Ratio
C. Nominal
D. Ordinal
2. If two events A & B are mutually exclusive, what does the
special rule of addition state?
A. P(A or B)=P(A)-P(B)
B. P(A and/or B)=P(A)+P(B)
C. P(A or B)=P(A)+P(B)
D. P(A & B)=P(A)+P(B)
3. For any data set, which measures of central location have only
one value?
A. Mode & standard deviation
B. Mode & mean
C. Mean & median
D. Mode & median
4. What is the variable used to predict the value of another
called?
A. Independent variable
B. Correlation variable
C. Variable of determination
D. Dependent variable
5. A null hypothesis makes a claim about a
A. Type II error
B. Population parameter
C. Sample statistic
C. Sample mean
6. The performance of personal & business investments is measured
as a percentage, return on investment. What type of variable is
return on investment?
A. Continuous
B. Qualitative
C. Attribute
D. Discrete
, QNT 351 FINAL EXAM QUESTION AND ANSWERS
– 2019
7. Twenty randomly selected statistics students were given 15
multiple-choice questions & 15 open-ended questions, all on the
same material. The professor was interested in determining on
which type of questions the students scored higher. This
experiment is an example of
Answer: a paired t-test
8. A listing of all possible outcomes of an experiment & their
corresponding probability of occurrence is called a
Answer: probability distribution
9. A small sample of computer operators shows monthly incomes of
$1,950, $1,775, $2,060, $1,840, $1,795, $1,890, $1,925, & $1,810.
What are these ungrouped numbers called?
Answer: Raw data
10. The mean of any uniform probability distribution is
Answer: (a + b)/2
11. Monthly commissions of first-year insurance brokers are
$1,270, $1,310, $1,680, $1,380, $1,410, $1,570, $1,180, & $1,420.
These figures are referred to as
A. Frequency distribution
B. Frequency polygon
C. a histogram
D. Raw data
12. The test scores for a class of 147 students are computed.
What is the location of the test score associated with the third
quartile?
A. 111
B. 75%
C. 37
D. 74
13. The names of the positions in a corporation, such as chief
operating officer or controller, are examples of what level of
measurement?
A. Interval
B. Ratio
C. Nominal
D. Ordinal
