HW 7 - Ch 7.2 & 9 - Matched-Sample t-Tests and Correlation
Matched-Samples t-Test Questions
Q1 A difference score is obtained by
subtracting the Before score from the After score.
subtracting the After score from the Before score.
dividing After scores
Chapter 8
Probability Distributions
and
One-sample z and t tests
Book Example
Normal Distribution
Normal Distribution
Example
Central Limit Theorem
SimilarwiththeconceptofLawofLargeNumbers
LawoflargenumbersAlawthatstatesthatifthesizeof
thesample,n,issuffi
Measures
Centraltendency
Dispersion
Symbols
x a variable
Ex. x - group of scores on the a test
summation of
Ex. x
n total number of cases
x-bar mean value of the variable x
- frequency
The 3Ms
Mean
Average
This is an array.
Median
Middle
Mode
Mosto
Chapter 12
The Chi-Square Test
The Chi-Square Test
Thusfarthetestsofsignificancewehavecoveredhave
beencomparingmeansorvariances.
Recallfromlastchaptertheideaofmeasuresof
association.
Thechisquareforcontingencytestholdssimilarideas
withbothtypesofstatistic
HW 8 - Ch 10 - Regression
Q1 If a counseling psychologist wants to predict college grades from high school grades,
college grades are the
predictor variable.
criterion variable.
independent variable.
causal variable.
Q2 When I want to make a predictio
First Name: _ Last Name: _ Student ID: _ Chem 51A Quiz 2 (10 points; 10 minutes) October 17, 2005 Note: All quizzes will be photocopied prior to being returned. In the event of a grading error, please submit the original quiz along with a note explaining
First Name: _ Last Name: _ Student ID: _ Chem 51A Quiz 1 (10 points; 10 minutes) October 10, 2005 Note: All quizzes will be photocopied prior to being returned. In the event of a grading error, please submit the original quiz along with a note explaining
Homework
DueinlabonFriday,September9th
Exercises2.1and2.2(p.5661)
CreatedefinitionslistforChapter2(p.32)
Descriptive Data
Attributes
Unchangeable
Height
Demographic
Mutable
Frequencies()
Count
Measurement
Nominal
Numbers are used as labels only.
Male (0)
Chem 51A Quiz 1 (10 points; 10 minutes) October 13, 2008
Academic Honesty Policy. Academic honesty is strictly enforced on quizzes, exams, and other aspects of this course.
Academic dishonesty will result in a failing grade in the class and a letter in th
Chem 51A Quiz 2 (10 points; 10 minutes) October 20, 2008
Academic Honesty Policy. Academic honesty is strictly enforced on quizzes, exams, and other aspects of this course.
Academic dishonesty will result in a failing grade in the class and a letter in th
Chem 51A Quiz 3 (10 points; 10 minutes) October 27, 2008
Academic Honesty Policy. Academic honesty is strictly enforced on quizzes, exams, and other aspects of this course.
Academic dishonesty will result in a failing grade in the class and a letter in th
z-scores and Normal Curves
SOCY601Alan Neustadtl
The Family of Normal Distributions
The
normal
law of error
stands out in the
experience of mankind
as one of the broadest
generalizations of natural
philosophy. It serves as the
guiding instrument in resear