QNT 351 FINAL EXAM | Verified 1. What level of measurement is the number of auto accidents reported in a given
month?
A. Interval
B.
... [Show More] Ratio
C. Nominal
D. Ordinal
2. If two events A and 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 and B)=P(A)+P(B)
3. For any data set, which measures of central location have only one value?
A. Mode and standard deviation
B. Mode and mean
C. Mean and median
D. Mode and 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 and 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
7. Twenty randomly selected statistics students were given 15 multiple-choice questions
and 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 and 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, and $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, and $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 [Show Less]