PSYCH 248 Review Questions (Answer Sheet)
Adrian Apolonio
1) In a positively skewed distribution, which of the following statements is true?
A. Mean < median
B. Mean = median
C. Mean > median
D. Not enough information
When a distribution is skewed, theres
Chapter 14: Two-
Factor Analysis of Variance
(Independent Measure)
Terminology
Main Effect: The mean differences among the rows of a matrix of data.
Interaction: Extra factors interfering with the main effect. If one factor depends on the
differ
Chapter 15: Correlation
Terminology
Positive Correlation: When the variables (both x and y) increase or decrease at the same time.
Negative Correlation: When one variable increases while the other one decreases. When the
variables seem to go in invers
Chapter 17: The Chi-
Square Statistic: Tests for
Goodness of Fit and Independence
Chi-Square Test for Goodness of Fit: Sample data is used to test the hypothesis about the
shape or proportions of a population distribution. It tells us how clos
Chapter 16: Regression
Terminology
Regression/ Regression Line: The best fitting line on a graph
.
Regression Equation for Y: The linear equation.
Standard Error of Estimate: The distance between the predicted Y value and the actual Y
value from the dat
Analysis of Article
Title: No Strings Attached: The Nature of Casual Sex in College Students
Authors: Catherine M. Grello, Deborah P. Welsh and Melinda S. Harper
Summary:
The researcher used 382 students in an introduction to psychology class at a
unive
"): A
Problems
Answer 1 OH problems (IO pts each)
38. Summarize the hypothesis testing process. Be sure to CXplain: alpha levels. critical regions. Type I Error.
'l we ll lzrror, effect size and power.
39. A researcher knows that the weights of 6-year
Psychology 248
Some Definitions and Intro
Constructs - hypothetical attributes or mechanisms that explain or predict a behavior in
theory
Continuous variable - a variable that can be broken down and divided without limit
Control variable - when a treatmen
Chapter 11: The t Test for Two Related Samples
Terminology
Matched-Subjects Design: Individuals in one sampled are matched to individuals in
another sample. This is done so that the two individuals are matched to be as close to
equal with respect
Chapter 12: Introduction to Analysis of Variance
Terminology
Analysis of Variance (ANOVA): Uses to compare 2 or more groups of data using the
mean difference or variance.
Factor: The independent or quasi-independent variable that separates the group
Chapter 3: Central Tendency
Terminology
Central Tendency: The average or a representative score that
describes a distribution of scores; usually the most typical of
the grouping. the one that stands for all
Mean: The sum
REVIEW SESSION
PSYCH
248
Adrian &
Keith
Scales of measurement
RATIO
INTERVAL
ORDINAL
NOMINAL
Descriptive statistics
Center measures of central tendency/location/position
Median - center
Mean average/center
Mode most common
Shape
Normal
Bell/balanced/symme
A psychologist was interested in comparing three treatments for a smoking cessation program.
She created three groups of 10 subjects each by random assignment and gave each group a
different treatment. The dependent variable measured was the time (in days
ANOVA QUIZ (Extra-Credit 06-2413)
Rossi A. Hassad, PhD, MPH, CStat
1. In analysis of variance, observed mean differences appear somewhat disguised as
variability
a.
b.
c.
d.
between groups
between subjects
within groups
within subjects
2. If the null hypo
DESCRIPTIVE STATISTICS REPORT
The purpose of this analysis was to ascertain the distribution of self-esteem scores
reported from a sample of thirty college students (n=30). The measures of central tendency
(mean, median and mode), measures of dispersion (
One-way ANOVA test: Smoking Cessation Treatments
Introduction
The objective of this analysis was to determine if there is a statistically significant
difference among 3 groups of 10 subjects (Self-Management, Individual, and Group Therapy)
with respect to
Final Exam Review
Professor Hassad
Psych 248
1. If the alpha level is decreased from = .05 to = .01, the size of the
critical region also decreases.
a. True
b. False
c. Not enough information
.05 is the area where your t statistic can fall in order to be
RECIDIVISM: A SOCIOLOGICAL CONTEXT OF LIFE AFTER PRISON
INTRO
Individuals who make the transition from a prison environment are presented with
sociological and psychological conflicts when reintegrating into civilian lifestyles. Quite often,
ex-convicts s
HUNTER COLLEGE
PSYCH 248 (Fall 2012)
Final Exam Review Sheet
Prof. Hassad
NOTE: This is a CUMULATIVE (or COMPREHENSIVE) exam, which will cover all the
course topics. Please refer to the course outline posted on Bb, and focus on the material covered
in cla
-Guys, listed a couple of things, Im using one article (TRANSITIONS FROM PRISON TO COMMUNITY),
the resources in it are super useful, i already picked up a couple for disecting, no need to go too indept
with the sociological aspect, but must take into cons
PSYCH 248 Prof. Hassad
3-page Review Sheet (First Exam)
Exam Date: 11th October
Time: 11:30 12noon (30 minutes)
Format: Multiple Choice (closed book exam)
NOTE: You must bring hard (paper) copies of the z and t distribution tables from the back
of your te
Chapter 9: Introduction to the t Statistic
Terminology
Estimated Standard Error: The way to estimating the standard error
when the standard deviation is unknown.
t Statistic: Used to find a general value for an unknown p