Solutions for Ch10 Time Series Analysis
See c) below for moving average values.
Solutions for Ch2 Categorical Data
(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
(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.)
Solutions for Ch6 Estimation
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
Solutions for Ch11 Control Charts
(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
Solutions for Ch7 Testing
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
Solutions for Ch4 Probability
(a) There are 480 + 2520 = 3000 low income households. The total number of households is 16000.
Hence P ( Low Income) =
(b) This is a conditional probability:
P ( Low Income|Will subscribe
Solutions for Ch9 Regression
Paste column C
of oil.xls into
column A of the
, and column B
into column B.
a) 1979 production rate = 0.306 + 0.719 Sustainable rate
b) For every addi
Solutions for Ch5 Probability Distributions
If X = the number of callers who opt for a live operator, then X has a binomial distribution with =
0.4 and n = 10.
(a) P ( X = 0) = ( 0.6 ) = 0.006 or use the template.
(b) P ( X 5) = 1 P (
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
(a) The issue here is about whether the two population means (call them 1 and 2) are equal. The
H0: 1 = 2 or 1 2 = 0
H1: 1 2 or 1 2 0
(a two-tailed test).
Paste the data from Intaglio.xls into t
Youssef et al.
Skiba et al.(2002)
Corporal punishment in
Determinants of corporal
punishment in school
Prevalence of corporal
punishment in school.
- Cross sectional
- Univariate anal