Econ 1193 Business Statistics - Week 2 class 1
23-28 June 2014
Chapter 3 Numerical descriptive measures
1. Ungrouped Data
1.1 Measures of Central Tendency
-Tell the information about the centre of a group of numbers e.g. a typical, middle, or average valu
Given Name:
ID. No:
Group no:
QUIZ Topic VII
QUESTION 1: The manager of a small trucking company is concerned with the time which trucks take to make the
trip from the companys warehouse in HCMC to the companys warehouse in Hanoi. He thinks that the possi
Econ 1193 Business Statistics - Week 1 class 1
16-21 June 2014
Chapter 1 Introduction and data collection
0. University level learning
Learning is for yourself, not for a course, not for exam, not for a good grade for people to
look at.
Different learning
International Review of Business Research Papers
Vol.6, No.1 February 2010, Pp.574-589
Managerial Perspectives of Bribery and Corruption in Vietnam
Dr Michael Segon* and Mr Chris Booth*
Gray & Kaufman (1998) suggest that ccorruption is a symptom of fundam
S_CE_Topic IV: Discrete Probability
Book Chapter 5:
Sections:
Some Important Discrete Probability Distributions
5.1 and 5.3
Q1. You are offered an investment opportunity. Its outcomes and probabilities are presented in the following
table.
x
P(x)
$1000
$0
Combinations and Permutations Worksheet
1. How many permutations of 3 different digits are there, chosen from the ten digits 0
to 9 inclusive?
a. 84
b. 120
c. 504
d. 720
2. How many permutations of 4 different letters are there, chosen from the twenty six
CHAPTERTHREE
DescriptiveStatistics
69
C
1.
Descriptive Statistics 39
Statistical measures used to yield information about the middle
of a group of numbers are called _.
E
Term
A. averages
B. measures of variability
C. measures of central tendency
D. Z sco
CE_Topic VII: Confidence Interval Estimations
Book Chapter 8:
Sections:
Confidence Interval Estimation
8.1, 8.2, 8.3, 8.4 and 8.6
1. A police chief is investigating the average length of time criminals serve for minor crimes. Past researches
indicates a p
Econ 1193 Business Statistics Week 6 class 1
21 -26 July 2014
Chapter 7 Sampling distributions
0. Population distribution (Week 5):
Entire population
Single cases Xi (N, , )
1. Sampling distribution (infinite population size, N>n) Sample Mean ()
-The dist
S_CE_Topic I: Organizing and Presenting Data
(Chapter 1)
Book Chapter 1:
Sections:
Introduction and Data Collection
1.1, 1.3 and 1.4
1. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales
trend. Specific
QUIZ Topic III
Given Name:
ID. No:
Group no:
1. The probability of a 2 on a fair toss of a fair die is 1/6. This is an example of assigning probabilities by the
_ method.
A.
B.
C.
D.
subjective probability
relative frequency
classical probability
empirica
Given Name:
ID. No:
Group no:
QUIZ Topic III
1. The probability of a 2 on a fair toss of a fair die is 1/6. This is an example of assigning probabilities by the
_ method.
A.
B.
C.
D.
subjective probability
relative frequency
classical probability
empirica
S_CE_Topic II: Numerical Descriptive Statistics
Book Chapter 3:
Sections:
Numerical Descriptive Measures
3.1, 3.2 (excl. Chebyshev Rule), 3.3, 3.4, 3.6
Q1. The XYZ Bank is interested in the number of times that customers use their credit cards in a given
252y0311 3/10/03
ECO252 QBA2
FIRST HOUR EXAM
February 20, 21 2003
Name _Key_
Hour of class registered _
Class attended if different _
Show your work! Make Diagrams!
I. (8 points) Do all the following.
x ~ N 10,3
15 10
P z 1.67 P z 0 P 0 z 1.67 .5 .4525
QUIZ Topic IV
Given Name:
ID. No: Student ID:
Group no: Given Name:
THE INFORMATION NEEDED TO ANSWER QUESTIONS 1 and 2
Suppose the staff in the customer complaints section tell the manager that there is a major problem with difficult customers. These
cust
S_CE_Topic III: Basic Probability
Book Chapter 4:
Sections:
Basic Probability
4.1, 4.2 and 4.4
Q1.
Shapiro, Director of Human Resources, is exploring employee absenteeism at Plain Power Plant.
An analysis of personnel records indicated that 20% of all pla
QUIZ Topic II
1.
A sales manager has sampled past sales records to determine how many televisions are sold each day. Daily
records for a sample of 5 days have been selected. The sales on these days are: 2, 4, 5, 2, 7. What is the
standard deviation for th
S_QUIZ Topic I
Given Name:
ID No:
Group:
1: A market researcher is interviewing a number of people and asking them several questions about their gender, income, the area in which
they live and the costs of running their car. Which of the following stateme
CHAPTERONE
IntroductiontoStatistics
1
2ChapterOne
D
1.
The complete collection of all entities under study is called the
_.
E
Term
A.
B.
C.
D.
B
A portion (subset) of the entities under study is called the
_.
2.
E
Term
A.
B.
C.
D.
sample
parameter
statist
CHAPTERSEVEN
SamplingandSamplingDistributions
203
Chapter Seven
1. Saving time and money are reasons to take a _
rather than a census.
E
Term
2.
E
Term
A.
B.
C.
D.
poll
sample
profile
Fishbone
Which of the following is NOT a reason for using a sample, rat
QUIZ Topic I
Given Name:
ID No:
Group:
Q1: A market researcher is interviewing a number of people and asking them several questions about their gender, income, the area in which
they live and the costs of running their car. Which of the following statemen
Math 251: Practice Questions for Test III
Hints and Answers
III.A: The Central Limit Theorem and Sampling Distributions.
III.A.1 The heights of 18-year-old men are approximately normally distributed with mean 68 inches
and standard deviation 3 inches.
(a)
S_CE_Topic I: Organizing and Presenting Data
(Chapter 2)
Book Chapter 2:
Sections:
Presenting Data in Tables and Charts
all
A manager wants to learn about the distribution of time a customer spends in the banks credit
department. He takes a sample of 50 c
Given Name:
St. ID. No:
S_QUIZ Topic II
1.
A sales manager has sampled past sales records to determine how many televisions are sold
each day. Daily records for a sample of 5 days have been selected. The sales on these days
are: 2, 4, 5, 2, 7. What is the
QUIZ Topic IV
Given Name:
ID. No:
Group no:
THE INFORMATION NEEDED TO ANSWER QUESTIONS 1 and 2
Suppose the staff in the customer complaints section tell the manager that there is a major problem with difficult
customers. These customers often insult staff
Given Name:
ID. No:
Group no:
QUIZ Topic V
1. One thousand students took a test on which the mean score was 73 with a variance of 64. A grade of
HD was given to all who scored 85 or better. Approximately how many HD's were there, assuming
scores were norm
CE_Topic XI: Time Series Forecasting and Index Numbers
(Part B) (Index Numbers)
Book Chapter 14:
Sections:
Time Series Forecasting and Index Numbers
14.1, 14.2, 14.3 (excl. Exponential Smoothing), 14.4,
14.7 (excl. Principle of Parsimony, excl. Comparison
Time Series Exercises_Solution
Question 1
1. Use the following time-series data to answer the given questions:
Time Period
1
2
3
4
5
6
7
8
9
10
Value
27
31
58
63
59
66
71
86
101
97
MA(3)
MA(5)
38.7
50.7
60.0
62.7
65.3
74.3
86.0
94.7
47.6
55.4
63.4
69
76.6
CE_Topic X: Introduction to Multiple Regression (Part A)
(Chapter 13)
Book Chapter 13:
Introduction to Multiple Regression
1. An economist wants to estimate a demand model for iphones based on price and income. She collects data
on iphone sales, price ($)
CE_Topic X_Part A: Introduction to Multiple Regression
(Chapter 13)
Book Chapter 13: Introduction to Multiple Regression
Sections:
13.1, 13.2, 13.4, 13.6 (excl. Interactions)
Q1 Lean Body Mass (LBM) is an index used to measure the fitness of athletes. Thi
CE_03A: Basic Probability
Q1.
Shapiro, Director of Human Resources, is exploring employee absenteeism at Plain Power Plant.
An analysis of personnel records indicated that 20% of all plant employees are absent excessively.
This is an example of assigning
CE_03B: Basic Probability
1) Let A be the event that a student is enrolled in an accounting course, and let S be the event that a
student is enrolled in a statistics course. It is known that 30% of all students are enrolled in an
accounting course and 40%
CE_02B: Numerical Descriptive Statistics
1) A bottling company fills 100 cl volume bottles with soft drinks. An inspector takes a sample
of 20 bottles to measure the amount of the soft drink placed in the bottles. The result is given
in centilitres:
X: 95
CE_02A: Numerical Descriptive Statistics
1) The XYZ Bank is interested in the number of times that customers use their credit cards in a
given period. A sample of n=20 cardholders was taken and it was found that the number of times
that they used their ca
CE_01A Introduction and Data collection (Chapters 1 & 2)
1. Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a
deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they
are purchasing less