Laura Hess March 12, 2008 Math-006-02 Professor Stein Graded Homework 3 Problem 3.14 a.
Group 1 (10 young adult men) treatment 1 (potent cigarettes) random allocation Group 2 (10 young adult men) tr
COMPARING SEVERAL
MEANS: ANOVA
Chapter 10
Slide 2
Aims
Understand the basic principles of ANOVA
Why it is done?
What it tells us?
Theory of one-way independent ANOVA
Following up an ANOVA:
Post
Comparing Two Means
Chapter 9
Aims
T-tests
Dependent (aka paired, matched)
Independent
Rationale for the tests
Assumptions
Interpretation
Reporting results
Calculating an Effect Size
T-test
D
The Beast of Bias
Slide 2
Aims
Assumptions of parametric tests based on the normal distribution
Understand the assumption of normality
Graphical displays
Skew
Kurtosis
Normality tests
Understand Ho
Multiple Regression
Chapter 8
Understand When To Use Multiple
Regression
Understand the multiple
regression equation and what the
betas represent
Understand Different Methods of
Regression
Hierarc
Linear Regression
Chapter 8
Slide 2
Aims
Understand linear regression with one predictor
Understand how we assess the fit of a regression model
Total Sum of Squares
Model Sum of Squares
Residual
Exploring Data with Graphs
Chapter 4
Aims
How to present data clearly
The Chart Builder
Graphs
Histograms
Boxplots
Error bar charts
Scatterplots
The Art of Presenting Data
Graphs should (Tufte
Everything You Ever wanted To Know
About Statistics
Chapter 2
Slide 2
Aims and Objectives
Samples and populations
Know what a statistical model is and why we use them.
The Mean
Know what the fit o
Why do we need statistics?
Chapter 1
Why do we need statistics
To be able to effectively answer business questions
Without the use of statistics it would be very difficult to make decisions
based on
Maura Woods Stats Homework #6 April 20, 2008 7.20 a. What are the degrees of freedom? n-1=15-1=14 Degrees of freedom = 14 b. Give two critical values t* from Table D that bracket t. t is between t*=2.