STUDENT NUMBER:
RESEARCH SCHOOL OF FINANCE, ACTUARIAL STUDIES
AND APPLIED STATISTICS
Second Semester Mid-Semester Examination (2015) Solutions
INTRODUCTORY STATISTICS FOR BUSINESS AND
FINANCE
(STAT7055)
Writing period: 1 1/2 hours duration
Study period: 1
Coeff of Var
IQR range = Q3-Q1
IQR Lp=(n+1)P/100
Sample Corr Coeff
Sample Covariance Cov (xy) = s(xy)
Pop
coeff of determ is
r2=coef of Corr
Population variance
Sample SD
Probability distribution always equals 1
Pop
Cov (xy) = s(xy)
Coeffi of Correlation
STAT7055 Semester 1 2014
Week 12 Tutorial Questions/Solutions
Question 1
(Exercise 15.26 Keller 9th Edition)
Conduct a test to determine whether the two classifications R and C are independent, using
the count data in the accompanying contingency table (u
STAT7055 Semester 2 2016
Week 3 Tutorial Questions
100
1. The average score for a class of 30 students was 75. The 20 male students in the class
averaged 70. The boxplots for the scores for the male and female students are given
below.
40
50
60
70
80
90
M
STUDENT NUMBER:
RESEARCH SCHOOL OF FINANCE, ACTUARIAL STUDIES
AND APPLIED STATISTICS
First Semester Mid-Semester Examination (2014) Solutions
INTRODUCTORY STATISTICS FOR BUSINESS AND
FINANCE
(STAT7055)
Writing period: 1 1/2 hours duration
Study period: 10
RESEARCH SCHOOL OF FINANCE, ACTUARIAL STUDIES
AND APPLIED STATISTICS
First Semester Mid-Semester Examination (2013) Solutions
INTRODUCTORY STATISTICS FOR BUSINESS AND
FINANCE
(STAT7055)
Writing period: 1 1/2 hours duration
Study period: 10 minutes duratio
RESEARCH SCHOOL OF FINANCE, ACTUARIAL STUDIES
AND APPLIED STATISTICS
First Semester Mid-Semester Examination (2013)
INTRODUCTORY STATISTICS FOR BUSINESS AND
FINANCE
(STAT7055)
Writing period: 1 1/2 hours duration
Study period: 10 minutes duration
Permitte
STAT7055 Semester 1 2014
Week 8 Tutorial Questions/Solutions
Question 1
In investigating the performance of a new model of copying machine, a company recorded
the amount of time required to fix breakdowns for it. For 73 breakdowns, an average time
of 88.8
STAT7055 Semester 2 2015
Week 2 Tutorial Solutions
1. Data was collected on 105 homes in Canberra in 2003. For each house, the following
information was collected: the estimated price of the house (in dollars); the number of
bedrooms; the size of the hous
STAT7055
Tutorial Week 3 Solutions
PART I
1. The following table lists the joint probabilities of achieving grades of A and not
achieving As in two MBA courses
Achieve a grade of A Does not achieve a Grade
in Marketing
of A in Marketing
Achieve a grade of
STAT7055 Semester 1 2014
Week 5 Tutorial Questions/Solutions
Question 1
The amount of time it takes for a student to complete a statistics quiz is uniformly
distributed between 30 and 60 minutes. One student is selected at random. Find the
probability of
STAT7055 Semester 2 2015
Week 4 Tutorial Solutions
1. Suppose the random variable X has the following probability distribution:
x
0
1
2
p(x)
0.6
0.3
0.1
Calculate the following:
(a) E(X)
Solution:
(x p(x) = 0 0.6 + 1 0.3 + 2 0.1 = 0.5
E(X) =
all x
(b) V (
STAT7055
LECTURE 13
Review
October 24, 2016
STAT7055 - Lecture 13
October 24, 2016
1 / 21
Regression with Categorical Independent Variables
Regression with Categorical Independent
Variables
I
I
Only need k 1 indicator variables to code up a
categorical va
STAT7055
LECTURE 12
Multiple Linear Regression
August 26, 2015
STAT7055 - Lecture 12
August 26, 2015
1 / 64
Introduction
Multiple Linear Regression
I
I
Multiple linear regression uses a single model to
investigate how two or more independent variables,
de
STAT7055
LECTURE 11
Simple Linear Regression
August 26, 2015
STAT7055 - Lecture 11
August 26, 2015
1 / 73
Introduction
Simple Linear Regression
I
I
I
Simple linear regression is used to investigate the
relationship between two variables, denoted X and
Y.
STAT7055
LECTURE 10
Chi-Squared Tests
August 25, 2015
STAT7055 - Lecture 10
August 25, 2015
1 / 41
Introduction
Tests for Categorical Data
I
Testing population proportions can be thought of as
making inferences about populations of categorical
data with t
STAT7055
LECTURE 13
Review
October 29, 2015
STAT7055 - Lecture 13
October 29, 2015
1 / 19
Final Exam
What to Review
I
I
Final exam covers material from the entire semester.
You should review:
I
I
I
I
I
All the lecture notes.
All the tutorial questions and
STAT7055
LECTURE 5
Sampling Distributions
August 4, 2015
STAT7055 - Lecture 5
August 4, 2015
1 / 61
Introduction
Statistical Inference
~
I
Statistical inference: Determining the behaviour
of a population by studying a sample from that
population.
I
I
I
I
STAT7055
Tutorial Week 7 Solutions
Question 1
i.
Glaucoma is a disease of the eye characterised by high intraocular pressure.
Suppose that a sample of 9 people suffering glaucoma had a mean intraocular
pressure of 20 mmHg. Assuming the population standard
STAT 7055
Tutorial Week 4 Solutions
Question 1
Answer using printed tables. A new surgical procedure is said to be successful 80%
of the time. Suppose that the operation is performed 5 times, with the results being
independent of each other.
(a) Define th
STAT7055 Semester 2 2015
Week 5 Tutorial Solutions
1. The amount of time it takes for a student to complete a statistics quiz is uniformly
distributed between 30 and 60 minutes. One student is selected at random. Find the
probability of the following even
STAT7055 Semester 2 2015
Week 3 Tutorial Solutions
100
1. The average score for a class of 30 students was 75. The 20 male students in the class
averaged 70. The boxplots for the scores for the male and female students are given
below.
40
50
60
70
80
90
q
STAT7055 Semester 1 2017
Week 4 Tutorial Solutions
1. Suppose the random variable X has the following probability distribution:
x
0
1
2
p(x)
0.6
0.3
0.1
Calculate the following (do it manually first, then try doing it in R using the sum function):
(a) E(X
STAT7055 Semester 1 2017
Week 3 Tutorial Solutions
100
1. The average score for a class of 30 students was 75. The 20 male students in the class
averaged 70. The boxplots for the scores for the male and female students are given
below.
40
50
60
70
80
90
M
STAT7055 Semester 1 2017
Week 4 Tutorial Questions
1. Suppose the random variable X has the following probability distribution:
x
0
1
2
p(x)
0.6
0.3
0.1
Calculate the following (do it manually first, then try doing it in R using the sum function):
(a) E(X
STAT7055 Semester 1 2017
Week 3 Tutorial Questions
100
1. The average score for a class of 30 students was 75. The 20 male students in the class
averaged 70. The boxplots for the scores for the male and female students are given
below.
40
50
60
70
80
90
M
STAT7055 Semester 1 2017
Week 5 Tutorial Solutions
1. The amount of time it takes for a student to complete a statistics quiz is uniformly
distributed between 30 and 60 minutes. One student is selected at random. Find the
probability of the following even
STAT7055 Semester 1 2017
Week 6 Tutorial Solutions
1. (a) What is a sampling distribution and how is a sampling distribution of the sample
mean obtained?
Solution: Suppose we repeatedly select samples of size n from some population,
until we have selected
STAT4055
Introductory Statistics for Business
and Finance
This course aims to facilitate an understanding of basic statistical techniques used for the analysis
of financial and investment data.
Mode of Delivery
Prerequisites
Incompatible Courses
Co-taught
STAT7055 Semester 1 2017
Week 5 Tutorial Questions
1. The amount of time it takes for a student to complete a statistics quiz is uniformly
distributed between 30 and 60 minutes. One student is selected at random. Find the
probability of the following even
STAT7055
Topic 7
Hypothesis Testing
STAT7055 - Topic 7
1 / 90
Introduction
Statistical Inference
I
Estimation (last time):
I
I
Draw inferences about a population by selecting a
sample and estimating population parameters (point and
interval estimators).
H