Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Fall 2014
STATSCHAPTER15
Inferencetestsofsignificance:thebasics
Twoaspectsofinference
a) Pointandintervalestimation
a. Confidenceintervals
b) Testingideasortheories
a. Testsofhypotheses/significance
b. Howtoformulateahypothesisstatistically
c. Howtoformallycarryout
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024b Lecture handout  Chapter 17Inference about
March 19, 2012
Inference about
Chapter 17 5th edition
Note:
A copy of the final exam draft formula sheet
and tables will be posted shortly.
Its strongly recommended that you get a paper
printout of t
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Stats1024bLecture Handout (Ch.11)
Feb28 2012
Ch: 11 Sampling Distributions
1. Parameters and Statistics
2. Law of Large Numbers
3. Sampling Distribution
4. Sampling Distribution of the mean ( x )
5. Central Limit Theorem
1
Stats1024bLecture Handout (Ch.
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Stats1024bCh. 10 Lecture Handout
Feb 14,2012
Ch 10: Introducing Probability
(plus ch.12, Independence)
Random event
An phenomenon(or event) is random if;
the values of the individual outcomes are uncertain, and
Theres a regular distribution of outcome va
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Stats1024bLecture Handout (Ch.15+Test Practice Qs)
March 13,2012
Inference in Practice
Ch.15, 5th text edition
Note: pages 9+ is copy of 2010 practice test
1
Stats1024bLecture Handout (Ch.15+Test Practice Qs)
March 13,2012
Ch 15. Inference in Practice
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024b Ch.5 Lecture handout, Jan 2012
CH 5: Regression
leastsquares regression line
residuals
influential observations
correlation & regression cautions
association does not imply causation
1
SS1024b Ch.5 Lecture handout, Jan 2012
Intro
may look a
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024b Ch 2 lecture notes (January 2012)
Chapter 2
DESCRIBING DISTRIBUTIONS WITH #s
focus on measures of Centre & Spread & choosing
Measures of Centre & Spread
A) Measures of Center
Mean
Median
Other (not in text);Midrange/midpoint, Mode
B) Measures
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024 Chapter1 Lecture Notes (set1Jan 12th , 2012)
SS01024S002
COURSE OBJECTIVE: Acquire a working
knowledge of the ideas and tools of practical statistics
MATERIAL BREAKDOWN
Exploring Data (Data Analysis)
Chapters 17
From Exploration to Inference
Cha
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024B Ch. 6 Lecture Notes
January 30, 2012
CH. 6 TwoWay Tables
Use TwoWay Tables to look at relationships between
2 or more categorical variables
Should be able to
Interpret data table & use to calculate percentages
understand the differences betwee
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Chapter 20: Solutions to Suggested Problems
20.13. (b) For a confidence interval, SE =
p1 (1 = p1 ) p 2 (1 = p 2 )
+
= 0.02207, so the
550
550
margin of error is 1.96 SE = 0.04326
20.24. The two samples are not independent, because the same 23 facilities
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Chapter 19: Solutions to Suggested Problems
19.1. (a) The population is all college students (or something similar). p is the
proportion of the population who say they pray at least once in a while.
(b) p =
107
= 0.8425.
127
19.4. There were only 5 or 6 s
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024b Lecture handout  Chapter 18Comparing two Populations
March 2012
Two Sample Problems(Comparing Two means)
th
Chapter 18 5 edition
Note:
Its strongly recommended that you get a
paper printout of the final exam draft formula
sheet and tables(lectu
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Stats1024bLecture Handout Ch.14
March 6 2012
Chapter 14
Introduction to Inference
1
Stats1024bLecture Handout Ch.14
March 6 2012
Ch: 14 Introduction to Inference
Statistical Inference provides methods for
drawing conclusions about a population from samp
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Statistical Science 1024b
Ch.3 The Normal Distributions
Note: copy of Table A is posted(S002 file)
1
Sometimes the overall pattern of a large number
of observations is so regular that we can
describe it by a smooth curve
2
Example Data: Heights of 3000
C
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Fall 2014
StatsChapter11
1. ParametersandStatistics
a. Parameternumberthatdescribesthepopulation(fixed,butunknown)
a.i. Examples:populationmeanmuandstandarddeviationsigma
b. Statisticnumberscomputerfromsampledata
b.i. Examples:xbar,s,andr
2. Lawoflargenumbers
a. As
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Fall 2014
CHAPTER2
Describingdistwith#s
1. Center
Meanavg(mostcommonmeasure)QUANTITATIVE
o Nonresistantvalue
Medianmiddlevalueinanorderedset,forodd(n+1)/2,forevenitsavg
ofthetwointhemiddleQUATITATIVE
o resistant
modemostfrequentlyoccurring(peak),maybemorethanono
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Fall 2014
QUIZ1chapter3morechapter46
Chapter9
ExperimentsIntroduction(terms,etc.)
DesignofExperimentspecifics
a) Treatments
b) Howtheexperimentalunits(subjects)areassignedtothetreatment
c) Theresponseandexplanatoryvariables
Factorsexplanatoryvariables
Treatmentanys
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
SS1024b Ch. 19 Lecture Notes
April 2012
Inference About a Population Proportion
Chapter 19
1
SS1024b Ch. 19 Lecture Notes
April 2012
Inference about a Population Proportion
Proportions
p = population proportion of successes(parameter)
p = sample proportio
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Chapter 14: Solutions to Suggested Problems
14.8. H0: = 115 vs. Ha: > 115. (Because the teacher suspects that older students
have a higher mean, we use a onesided alternative.)
14.11. H0: = 64.2 in vs. Ha: 64.2 in. (We have no prior suspicion that this
g
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2012
Chapter 18: Solutions to Suggested Problems
18.1. This is a matchedpairs design: attitudes of husbands and wives may be
connected, so we should keep them together.
18.2. This involves two independent samples: those students who read the Wall
Street Journ