Solutions for Ch10 Time Series Analysis
Exercises
Exercise 10.1
a)
PhilippinesBalanceofTrade
$10,000.00
$USmillion
$5,000.00
$
$5,000.00
TradeBalance
$10,000.00
$15,000.00
1990
1995
2000
2005
2010
Year
b)
See c) below for moving average values.
Philippine
Solutions for Ch2 Categorical Data
Exercises
Ex 2.1
(a)
Grade
Percentage
Fail
Pass
Credit
Dist
HD
16.4
43.6
20
12.7
7.3
Student Grades
HD
Fail
Dist
Credit
Pass
(b) The focus here is on how the class is divided up by the grading system
(c) Ordinal. The cha
Solutions for Ch3 Numeric Data
Exercises
3.1
(a)
(Often it is best to create a quick plot
as below by with unordered leaves
by just going through the data in the
order it is presented, It is then easy
to order the leaves.)
10
2352
3434
43
55
6
740
Solutions for Ch6 Estimation
Exercises
Ex 6.1
Denote the mean return by x %. This is the sample mean from a
sample of size 10, so the distribution of x has a mean of 5.13 and a
standard deviation of 6 / 10 = 1.897 . Because the population is
normally dist
Solutions for Ch11 Control Charts
Exercises
Ex 11.1
(a) First rearrange the data to give each sample as a
row (as described in the solution to EG1):
Paste the first 10 rows into Training Data in the
control charts template, and the remaining 20 rows
into
Solutions for Ch7 Testing
Exercises
Ex 7.1
This is a test about a population mean, . Here is the average breaking strength, in kPa, of a plastic
bag. We are asked to evaluate the evidence that this average is less than 40 kPa, so set:
H0: = 40
H1: < 40
(a
Solutions for Ch4 Probability
Exercises
Ex 4.1
(a) There are 480 + 2520 = 3000 low income households. The total number of households is 16000.
Hence P ( Low Income) =
3000
= 0.1875
16000
(b) This is a conditional probability:
P ( Low IncomeWill subscribe
Solutions for Ch9 Regression
Exercises
Ex 9.1
Paste column C
of oil.xls into
column A of the
template
Regression_1.xlt
, and column B
into column B.
Clicking
the
Results
tab
gives:
a) 1979 production rate = 0.306 + 0.719 Sustainable rate
b) For every addi
Solutions for Ch5 Probability Distributions
Exercises
Ex 5.1
If X = the number of callers who opt for a live operator, then X has a binomial distribution with =
0.4 and n = 10.
10
(a) P ( X = 0) = ( 0.6 ) = 0.006 or use the template.
(b) P ( X 5) = 1 P (
Exercise 1
a) 1
categorical nominal
2
categorical nominal
3
numerical discrete
4
categorical nominal
5
numerical continuous
6
categorical ordinal
b) All cat owners in New Zealand
c) Unfortunately there is no list of cat owners in New Zealand. The best ava
Solutions for Ch8 Comparing
Exercises
Ex 8.1
(a) The issue here is about whether the two population means (call them 1 and 2) are equal. The
hypotheses are:
H0: 1 = 2 or 1 2 = 0
H1: 1 2 or 1 2 0
(a twotailed test).
Paste the data from Intaglio.xls into t
YEAR
1998
AUTHOR(S)
Youssef et al.
(1998)

2002
Skiba et al.(2002)

VARIABLES
Corporal punishment in
school
Determinants of corporal
punishment in school
Prevalence of corporal
punishment in school.
METHODOLOGY
 Cross sectional
survey
 Univariate anal