Objectives (PSBE Chapter 10.1)
Inference about the regression model and using the Regression
Line
Statistical model for simple linear regression
Estimating the regression parameters
Conditions for regression inference
Confidence intervals and signific
Section 6.4
Power and Inference as a Decision
Announcements
1 quiz 11 5 12 is due Wednesday (11/7), but I will not assign
another online quiz until Friday, 11/9 (i.e. no online quiz
due on Friday, 11/9).
2
CORRECTION: I will not assign another online quiz
Section 5.1
Section 5.2
General probaiblity rules
Objectives
Independence and the multiplication rule
General addition rule
Jessi Cisewski
36(70) -207 - Chapter 5
CMU
Section 5.1
Section 5.2
General probaiblity rules
Example of general multiplication ru
Section 6.1
Section 6.2
Announcements
1 Proposed Exam 2 date: Monday, November 19 (rather than
Wednesday, November 14)
Jessi Cisewski
36(70) - 207 - Chapter 6
CMU
Section 6.1
Section 6.2
Example
Suppose that = 10 is given for a population. What is the
req
Section 6.1
Objectives
- Statistical condence
- Condence intervals
- Condence interval for a population mean
- How condence intervals behave
- Choosing the sample size
Jessi Cisewski
36(70) - 207 - Chapter 6
CMU
Section 6.1
Example - TV Watching Time
The
Section 5.4
Announcements
1 HW8 is due at the beginning of class on Friday.
2
My Thursday oce hours this week are rescheduled for today
from 1 - 2 PM.
3
Everyone who turned in HW6 has had 2 points added to their
score to compensate for the rst problem (ab
Section 6.2
Signicance Testing
Chapter 6.2: Objectives
- The reasoning of signicance tests
- Stating hypotheses
- The P-value
- Statistical signicance
- Tests for a population mean
- Condence intervals to test hypotheses
Bronwyn Woods
36(70) - 207 - Chapt
Section 5.2
Section 5.3
Conditional probability
Announcements 36-490: Undergraduate Research
This course is designed to give undergraduates experience using
statistics in real research problems. Small groups of students will
be matched with clients and do
Section 5.1
Section 5.3
Binomial distributions
Review
Exercise 4.8 on page 222 of textbook
You read in a book on poker that the probabiity of being dealt
1
three of a kind in a ve-card poker hand is 50 . Explain in simple
language what this means.
Jessi C
Chapters 4.1 and 4.2
Section 4.3
Announcements
HW5 is posted on Blackboard and is due this Friday, October
5.
No TA oce hours this Thursday. (I will still be holding my
oce hour on Thursday from 1 to 2 PM.)
Jessi Cisewski
36 (70) - 207 - Chapter 4
CMU
C
Chapter 1.3 continued
Normal quantile plots
Chapter 2.1 - Scatterplots
Example 8
According to Wikipedia: Gigantism, also known as giantism is a condition characterized by excessive growth and
height signicantly above average. Suppose the average height of
Section 6.3
Section 6.4
Announcements
1 quiz 11 5 12 is due Wednesday (11/7), but I will not assign
another online quiz until Friday, 11/9 (i.e. no online quiz
due on Friday, 11/9).
Jessi Cisewski
36(70) - 207 - Chapter 6
CMU
Section 6.3
Section 6.4
Examp
4.4 Sampling distribution of a sample mean
Rules for means and variances - Example 1
1
If random variables X and Y are independent and X = 1,
X = 2, and Y = 0, Y = 1, what is the mean and standard
deviation of the new random variable
W = 3 + 2 X 4 Y ?
2
N
Section 7.2
Announcements
1 quiz 11 14 12 (due by 10 AM Friday, 11/16/12)
2
Reminder: Exam 2 is on Monday, November 19.
3
A practice exam has been posted under Course Content
on Blackboard
4
A list of the sections the exam will covered has been
posted und
Section 8.1
Section 8.2
Announcements
1 Reminder: Exam 2 is on Monday, November 19.
2
A practice exam has been posted under Course Content
on Blackboard
3
A list of the sections the exam will covered has been
posted under Course Content on Blackboard
4
Th
Objectives
Types of variables
Categorical Variables
Quantitative Variables
Announcements
Announcements
Reading quizzes:
I will post the reading quizzes for each week by classtime
Monday morning (i.e. the reading quizzes for the following
Wednesday, Frida
Quartiles
Announcements
Announcements
Reminder: rst homework is due this Friday *at the
beginning* of class.
If you havent started the homework yet, I recommend that
you do. Make sure to attend oce hours if you have
questions.
If you work with others o
Section 5.3
Section 5.4
Binomial distributions
Announcements
1 HW8 is posted and due at the beginning of class on Friday.
2
My Thursday oce hours this week are rescheduled for
Wednesday from 1 - 2 PM. Please email me to schedule an
appointment if this tim
Section 10.1: Inference about the Regression Model
Announcements
1 HW13 is due Friday
2
Tibshirani
36 (70) - 207
Bronwyn Wood will not be holding oce hours on Tuesday or
Thursday this week.
CMU
Section 10.1: Inference about the Regression Model
Exam examp
36(70)-207 Probability and Statistics for Business
Applications
Jessi Cisewski
[email protected]
Carnegie Mellon University
August 27, 2012
Jessi Cisewski (CMU)
36(70)-207 Statistics
August 27, 2012
1 / 25
Background
Description
This is the rst half o
Announcements
Bronwyn Woods will not be holding office hours
next week (12/4 and 12/6). Please email me
with questions.
p HW12 is due this Friday.
p Online quizzes through the rest of the semester
are posted.
p Exam 2 will be returned on Friday.
p
Objecti
Inference for Distributions
Comparing Two Means
IPS Chapter 7.2
2009 W.H. Freeman and Company
Objectives (IPS Chapter 7.2)
Comparing two means
p
Two-sample z statistic
p
Two-samples t procedures
p
Two-sample t significance test
p
Two-sample t confidence
Chapter 4.3
4.4 Sampling distribution of a sample mean
Introduction
Announcements
HW6 is due Friday, October 12 at the beginning of class.
Jessi Cisewski
36 (70) - 207 - Chapter 4
CMU
Chapter 4.3
4.4 Sampling distribution of a sample mean
Introduction
Ob
Examining Relationships
Relations in Categorical Data
PSBE Chapter 2.5
2011 W.H. Freeman and Company
Objectives (PSBE Chapter 2.5)
Data analysis for two-way tables
p
Two-way tables
p
Marginal distributions
p
Relationships between categorical variables
p
Section 7.1
Announcements
1 I will not assign another online quiz until Wednesday, 11/14
to be due Friday, 11/16. (i.e no quiz due Monday or
Wednesday of next week)
2
Jessi Cisewski
36 (70) - 207
Reminder: Exam 2 is on Monday, November 19.
CMU
Section 7.1
Exam 1
Content: Chapter 1, 2, and 3.1
Study Tips:
p Review homework assignments solutions posted on Blackboard
(HW1 and HW4 solutions will be added after class)
p Review lecture notes
p Review assigned textbook readings
p Make sure you can solve all the q
Announcements
p
I will not be holding my office hour on Thursday (it was rescheduled
this week for yesterday)
p
HW3 due Friday.
p
A TA will be working through exam type questions in class on
Friday. Please bring a calculator and your copy of Table A.
p
HW