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) treatment 2 (weak cigarettes) Compare work output ea
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 Hoc Tests
When And Why
When we want to compare
Comparing Two Means
Dependent (aka paired, matched)
Rationale for the tests
Calculating an Effect Size
Compares two means based on related da
The Beast of Bias
Assumptions of parametric tests based on the normal distribution
Understand the assumption of normality
Understand Homogeneity of Variance
Know how to correct
Understand When To Use Multiple
Understand the multiple
regression equation and what the
Understand Different Methods of
Understand How to d
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 Sum of Squares
Learn how to do Regression in SPS
Pearsons Correlation Coefficient
What is a Correlation?
Exploring Data with Graphs
How to present data clearly
The Chart Builder
Error bar charts
The Art of Presenting Data
Graphs should (Tufte, 2001):
Show the data.
Induce the reader to think ab
Everything You Ever wanted To Know
Aims and Objectives
Samples and populations
Know what a statistical model is and why we use them.
Know what the fit of a model is and why it is
The Standard Dev
Why do we need statistics?
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 data. If we were interested in the differences between
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*=2.145 (p= .025) and t*=2.264 (p=.02) c. What arte th