Bio2010exam2
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Independent t-Test by
Regression
1
Acknowledgement
Thank you to Prof. Schmidt for the data,
formulas, etc. for this lecture!
2
Example
We believe that the group of children
receiving math training wil
Repeated Measures ANOVA
Problem 1
A researcher reinforced 6 rats with food at
the end of running in a complex maze. He
recorded the number of errors the rats made
in the maze as a measure of learning.
Two-Way ANOVA
Schacter & Singer Study
Informed vs. Uniformed
Euphoria vs. Anger
2 factor study
Factorial Designs
Each level of one factor is administered with each
level of another factor
2 X 2 =
Analysis of Variance
Problem #1
A department chair wants to determine if
there are differences in how well students
learn introductory psychology based on
which instructor they have. She compared
aver
t Tests
1
One-Group t Test
The local grocery store advertises that its
bags of apples weigh an average of 5
pounds. To check this claim you randomly
selected a sample of 25 bags. The average
weight o
1
Introduction
Syllabus questions?
Labs begin on Monday Jan. 23
2
Hypothesis Testing Review
3
Example 1
On a reading test, the national population
mean is 100 with a standard deviation of 15.
A samp
Choosing the Appropriate
Statistic
Methods
Pre-Experimental Designs
One-Group Posttest Only
One-Group Pretest-Posttest
Quasi-Experimental Designs
Nonequivalent Control Group Pretest-Posttest
Untre
Choosing the Appropriate
Statistic
Methods
Pre-Experimental Designs
One-Group Posttest Only
One-Group Pretest-Posttest
Quasi-Experimental Designs
Nonequivalent Control Group Pretest-Posttest
Untre
Advanced Statistics
1
Multivariate Analysis
Bivariate-investigates relationships between
any two variables
Multivariate-examines relationships among
more than two variables
2
Multivariate Analysis o
Independent t-Test by
Regression
1
Acknowledgement
Thank you to Prof. Schmidt for the data,
formulas, etc. for this lecture!
2
Example
We believe that the group of children
receiving math training wil
Correlation and Regression
Example
I believe there is a negative relationship
between missing 3006 classes and and the
number of happy thoughts a student has in a
day. In a survey you ask 10 people h
Correlation and Regression
Example
I believe there is a negative relationship
between missing 3006 classes and and the
number of happy thoughts a student has in a
day. In a survey you ask 10 people h
Chi Square Test of Independence
Chi Square Test of Independence
Two variables
Want to know if two nominal variables are
related
Mutually exclusive categories
Examples
Is there a relationship betwe
Chi Square Test
For Goodness of Fit
Example 1
You and your friend decide to play a gambling
game. A coin is tossed 80 times and she wins $5
for every heads and you win for every tails. The
result is
Threats to Internal Validity
1
Appropriateness of Research
Findings
Procedures
Conclusions
Four types of validity
2
Statistical
Definition
Threat
3
Construct Validity
Definition
Threat
4
Three Measure