Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
SS2858
Probability and Statistics II
Contact Info
Name:
Dr. Doug Woolford
Email:
[email protected]
Phone:
5196612111 Extension 88326
Office:
WSC 233 (Western Science Centre)
Course Info
Prerequisites
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
How do we answer questions such as:
Is there a difference between the effectiveness of a new
drug and the old drug when treating a given condition?
Sampling Distributions,
The Law of Large Numbers,
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
SS2858B Midterm Test, Version 1 Page 1 of 7
Student Number:
Part I: Multiple choice. Circle your answer directly on the exam paper.
[1 mark] 1. Eggs that are contaminated with salmonella can cause
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
1. A manufacturer of nickelhydrogen batteries randomly selects 100 nickel plates for test cells, cycles
them a specified number of times, and determines that 14 of the plates have blistered.
(a) (3 ma
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
SS2858B Quiz 4, Version 1
Name:
Western, Statistical & Actuarial Sciences
ID #:
Instructions:
Do not open this test paper or write anything on this test paper until you are told to start.
This is a
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
# Data on observed frequencies of the number of distinct butterfly species
# collected in Malaya, Malaysia (R.A. Fisher et al, J. Animal Ecol., 1943)
# Create a vector that contains the data,
#
based
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
The t Distribution
The t distributions are like the normal distribution,
but they have more probability mass in their tail.
0.4
Normal(0,1)
t with 2 df
f(x)
0.3
0.2
0.1
0.0
3
2
1
0
1
2
3
x
Their
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS SS2858

Winter 2017
. SS2858B Quiz 1, Version 1 Name: SOLU TZOUS
Western, Statistical EB Actuarial Sciences
ID #.
Instructions:
0 This is a closed book test. You are permitted to use a nonprogrammable, nongraphing,
c
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS 1024A

Winter 2016
Module 1
Intro and Sampling
Individuals or units: groups of people, animals or things to which the research
conclusions should apply
 Group of individuals is called the population
Parameters: what we
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS 1024A

Winter 2016
THE UNIVERSITY OF WESTERN ONTARIO
KINGS UNIVERSITY COLLEGE
STATISTICS 1024A MIDTERM 1
Saturday, February 11, 2017, 7:00 PM  9:00 PM
EXAM CODE 108
INSTRUCTIONS:
This is a closed book test.
Use only
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS 1024A

Winter 2016
Name: _ Date: _
A)
B)
C)
D)
1.Employees at a large company are surveyed about their health insurance status.
Employees are coded as 1 if health insurance is obtained through the company's benefit
prog
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS 1024A

Winter 2016
Approximate Weekly Lecture and Suggested Text Exercises
Online quiz 1, Sept 28 to Sept 29
4 Oct 36 Ch. 6, 8 Twoway tables, sampling
Oct 913 Fall Readin Week No classes _
Oct 1620 Ch. 9, 10, 12 E
Western University (Ontario)  Also known as University of Western Ontario
Statistics
STATISTICS 1024A

Winter 2016
THE UNIVERSITY OF WESTERN ONTARIO
KINGS UNIVERSITY COLLEGE
STATISTICS 1024A MIDTERM 1
Saturday, October 22, 2016, 7:00 PM  9:00 PM
EXAM CODE 239
INSTRUCTIONS:
This is a closed book test.
Use only a
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 2857

Fall 2013
Customer Service TASK 2: AB
LO 2: TASK 2
A: Evaluate different communication methods and how these are used
to best effect customer focused culture in your organization.
Effective communication is v
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 4
Descriptive statistics
Descriptive statistics: conducting studies to collect, summarize, analyze, and draw
conclusions from data
vs. Inferential statistics: generalization from samples to po
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 6
Binomial distribution
Population proportion: the fraction of people in population who have a
characteristic of interest
ex. fraction of patients in hospital with type O blood
if an SRS: pr
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 8 notes
Sampling distributions
Parameter: number that describes the population
in practice: unknown, cannot measure entire population
Statistic: number that can be computed from the sample da
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 2 notes
What is statistics?
the science of data
Statistics: methods/procedures for building experiments, obtaining data, then
organizing, summarizing, analyzing, interpreting, presenting, and
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 7 notes
Normal distributions
Normal distribution:
type of density curve (area underneath must always =1)
bellshaped
symmetric distribution
mean= median
not typical, need to plot before a
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 3 notes
Study designs (and issues)
Issues with observational studies
cant claim cause and effect (causation)
havent instituted a control, potential for confounding
Confounding: when other va
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 5
Probability
Probability: percentage of times an event would occur in a long series of
repetitions/trials
Frequentist approach: chance behavior is unpredictable in the short run, but has a
re
Western University (Ontario)  Also known as University of Western Ontario
Biostatistics
STATISTICS 2244

Fall 2014
Lecture 9 notes
Confidence intervals
Reasoning of statistical estimation
sample distribution of x bar tells us how close to mu the sample mean x bar will be
Confidence interval: how close to x bar th
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2014
LECTURE 3 Rohin Attrey
Sample Space
The set S of all possible outcomes of a random experiment
for example, during a coin flip, you can get either heads or tails (that is the sample space)
Discrete:
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2014
Statistics Lecture 2 Notes Rohin Attrey
Deterministic data the same data will be obtained under repeated experiments
 i.e. acceleration; physical laws, persons date of birth
Random data its value is
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2014
7. Time Series vs. Cross Sectional Data Rohin Attrey
Time Series: Data from an event recorded over time
especially useful for comparing data patterns of different groups
Cross Sectional: Data from ob
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2014
Estimate Rohin Attrey
a parameter is a characteristic of the entire population
a statistic is a function of the observations of a random sample of the population, that does not depend on
any unknown
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2014
Simple Linear Regression
Linear Regression: find the best relationship between the dependent and independent variable.
if we have a random sample (x1, y1)(xn,yn) and we want to find a mathematical re
Western University (Ontario)  Also known as University of Western Ontario
STATISTICS 1024

Winter 2014
Anova
need to determine which anova to use
Traditional approach: explained vs unexplained; F statistic, etc.
Model comparison approach: test competing linear models; analysis is the same
One way anov