CHAPTER 1DATA AND STATISTICS
MULTIPLE CHOICE
1. In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of the
a. ordinal scale
b. nominal scale
c. ratio scale
d. interval scale
ANS: B
PTS: 1
TOP: Descriptive
CHAPTER 13MULTIPLE REGRESSION
MULTIPLE CHOICE
1. The mathematical equation relating the expected value of the dependent variable to the value of the
independent variables, which has the form of E(y) =
a. a simple linear regression model
is
b. a multiple n
CHAPTER 5DISCRETE PROBABILITY DISTRIBUTIONS
MULTIPLE CHOICE
1. A numerical description of the outcome of an experiment is called a
a. descriptive statistic
b. probability function
c. variance
d. random variable
ANS: D
PTS: 1
TOP: Discrete Probability Dist
CHAPTER 12SIMPLE LINEAR REGRESSION
MULTIPLE CHOICE
1. In a regression analysis, the error term is a random variable with a mean or expected value of
a. zero
b. one
c. any positive value
d. any value
ANS: A
PTS: 1
TOP: Regression Analysis
2. The coefficien
CHAPTER 5DISCRETE PROBABILITY DISTRIBUTIONS
MULTIPLE CHOICE
1. A numerical description of the outcome of an experiment is called a
a. descriptive statistic
b. probability function
c. variance
d. random variable
ANS: D
PTS: 1
TOP: Discrete Probability Dist
Multiple regression
MULTIPLE CHOICE
1. The mathematical equation relating the expected value of the dependent variable to the value of the
independent variables, which has the form of E(y) =
is
a.
b.
c.
d.
a simple linear regression model
a multiple nonli
CHAPTER 7SAMPLING AND SAMPLING DISTRIBUTIONS
MULTIPLE CHOICE
1. From a group of 12 students, we want to select a random sample of 4 students to serve on a university
committee. How many different random samples of 4 students can be selected?
a. 48
b. 20,7
CHAPTER 3DESCRIPTIVE STATISTICS: NUMERICAL MEASURES
MULTIPLE CHOICE
1. The measure of location which is the most likely to be influenced by extreme values in the data set is
the
a. range
b. median
c. mode
d. mean
ANS: D
PTS: 1
TOP: Descriptive Statistics
Descriptive statistics
MULTIPLE CHOICE
1. A frequency distribution is a tabular summary of data showing the
a. fraction of items in several classes
b. percentage of items in several classes
c. relative percentage of items in several classes
d. number of i
CHAPTER 11COMPARISONS INVOLVING PROPORTIONS AND A TEST
OF INDEPENDENCE
Goodness test and if proportion are not given use the opp. To
state null and Ha hypothesis.
MULTIPLE CHOICE
1. When developing an interval estimate for the difference between two popul
CHAPTER 9HYPOTHESIS TESTS
MULTIPLE CHOICE
1. The sum of the values of and
a. always add up to 1.0
b. always add up to 0.5
c. is the probability of Type II error
d. none of these alternatives is correct
ANS: D
PTS: 1
TOP: Hypothesis Tests
2. What type of
Part II
Question I (5 marks)
A food store has detcnnined that daily demand for milk cartons has a normal distribulion, with a mean of SS
cartons and a standard deviation ol'6 cartons.
a. On Saturdays, the demand for milk is known to exceed 60 cartons. On
Department of Decision Sciences and Management Information Systems
COMM 215 Business Statistics
Section BX
Summer 2012
Final Examination
August 2012
Last Name: _ First Name_
(Please Print)
Student No.:_
INSTRUCTIONS
1. Attempt all questions. Show your wor
Discrete probability distributions
MULTIPLE CHOICE
1. A numerical description of the outcome of an experiment is called a
a. descriptive statistic
b. probability function
c. variance
d. random variable
ANS: D
PTS: 1
TOP: Discrete Probability Distributions
Interval estimation
MULTIPLE CHOICE
1. The absolute value of the difference between the point estimate and the population parameter it
estimates is
a. the standard error
b. the sampling error
c. precision
d. the error of confidence
ANS: B
PTS: 1
TOP: Inte
Measure of association and simple linear regression
MULTIPLE CHOICE
1. A numerical measure of linear association between two variables is the
a. variance
b. covariance
c. standard deviation
d. coefficient of variation
ANS: B
PTS: 1
TOP: Descriptive Statis
CHAPTER 6CONTINUOUS PROBABILITY DISTRIBUTIONS
MULTIPLE CHOICE
1. The center of a normal curve is
a. always equal to zero
b. is the mean of the distribution
c. cannot be negative
d. is the standard deviation
ANS: B
PTS: 1
TOP: Continuous Probability Distri
CHAPTER 8INTERVAL ESTIMATION
MULTIPLE CHOICE
1. The absolute value of the difference between the point estimate and the population parameter it estimates is
a. the standard error
b. the sampling error
c. precision
d. the error of confidence
ANS: B
PTS: 1
CHAPTER 2DESCRIPTIVE STATISTICS: TABULAR AND GRAPHICAL
PRESENTATIONS
MULTIPLE CHOICE
1. A frequency distribution is a tabular summary of data showing the
a. fraction of items in several classes
b. percentage of items in several classes
c. relative percent
john Molson *
School of Business
Department of Supply Chain and Business Technology Management
COMM 215 Business Statistics
Section BX
Final Examination
August 16, 2013
Last Name: First Name
(Please Print)
Student No.:
INSTRUCTIONS
l. Attempt all ques
Continuous Distributions
MULTIPLE CHOICE
1. The center of a normal curve is
a. always equal to zero
b. is the mean of the distribution
c. cannot be negative
d. is the standard deviation
ANS: B
PTS: 1
TOP: Continuous Probability Distributions
2. A normal d