Homework # 6 (Total: 37/37)
Instructions: For this homework, you will be answering questions associated with Chapter 12
in the text. Please use lined paper and write legibly. Please also write down your name, UID
and tutorial session when you submit the a

Homework # 2 (Total: 31/31)
Instructions: For this homework, you will be answering questions
associated with Chapters 3, 4, and 5 in the text. Please see the syllabus
for the requirements on homework.
Chapter 3: (Total: 16 pt)
1. The following frequency d

Homework # 5 (Total: 22/22)
Instructions: For this homework, you will be answering questions associated with
Chapters 10 and 11 in the text. Please use lined paper and write legibly. Please also
write down your name, UID and tutorial session when you subm

Homework # 4
Instructions: For this homework, you will be answering questions associated with
Chapters 7 and 8 in the text. Please use lined paper and write legibly. Please also
write down your name, UID and tutorial session when you submit the assignment

Homework # 8
Instructions: For this homework, you will be answering questions associated with
Chapter 15 and 18 in the text. Please use lined paper and write legibly. Please also
write down your name, UID and tutorial session when you submit the assignmen

Homework # 5
Instructions: For this homework, you will be answering questions associated with
Chapters 10 and 11 in the text. Please use lined paper and write legibly. Please also
write down your name, UID and tutorial session when you submit the assignme

Homework # 8 (Total: 31/31)
Instructions: For this homework, you will be answering questions associated with
Chapter 15 and 18 in the text. Please use lined paper and write legibly. Please also
write down your name, UID and tutorial session when you submi

Homework # 7 (Total mark: 30/30)
Instructions: For this homework, you will be answering questions associated with Chapter 14
in the text. Please use lined paper and write legibly. Please also write down your name, UID
and tutorial session when you submit

Homework # 7
Instructions: For this homework, you will be answering questions associated with Chapter 14
in the text. Please use lined paper and write legibly. Please also write down your name, UID
and tutorial session when you submit the assignment.
Dead

Chapter 14: Testing Hypotheses about Difference
Between Two Independent Groups
Two Independent Samples (X and Y)
Null Hypothesis is now of No Difference between groups
(i.e., H0: X - Y = 0)
Alternative Hypothesis is of Difference (i.e., H0: X - Y
0; n

Chapter 11: Random Sampling and
Sampling Distributions
Inferences about population parameter on the
basis of a sample statistic
Start with a hypothesis (statement about a
parameter to be tested using the sample)
1
If we take a mean of each sample (and

Chapter 13: Interpreting the
Results
Level of significance vs. p-value (Chap.
12)
Significance vs. Importance
Effect Size
Errors in Hypothesis Testing
Power of tests
1
Level of significance vs. p-value
t values also have associated p
(probability) v

Chapter 12: Introduction to Statistical
Inference
Statistical Inference: drawing conclusion about
population parameter from sample statistic.
1
Can you identify your favorite beer?
Lets assume that you cant (i.e., we
assume you are guessing)
Well chang

Chapter 15: Testing for a Difference Between
Two Dependent (Correlated) Groups
Dependent-Samples Designs compare two samples that
are related
3 ways samples can be dependent
Same people in both groups (Repeated Measures Design)
Matched subjects
Match

Homework # 3
Instructions: For this homework, you will be answering questions associated with
Chapters 6 in the text. Please use lined paper and write legibly.
Chapter 6:
1.
In a normal distribution, what proportion of cases falls between:
(a)
(b)
(c)
(d)

Chapter 8: Prediction (aka Regression)
Correlation coefficients
about the strength of a relation,
dont orient us to particular scale values when we
want to predict values of the second variable
1
How to make predictions?
Option #1: Ignoring relation

Chapter 7: Correlation
When we have two variables we can ask about
the degree to which they co-vary
is there any relationship between an individuals
score on one variable and his or her score on a
second variable
number of beers consumed and reaction ti

Chapter 9: Interpretive Aspects of
Correlation and Regression
Number of factors influence size of r
Range of Talent (variability) in X and Y values
(restriction of range)
Discontinuity of distributions
Heterogeneity of samples (pooling
observations)
1

Chapter 2: Frequency Distributions,
Percentiles, and Percentile Ranks
When we post grades
Your score
Everyone elses scores
How to best present, so people can see
how they did?
1
Many possibilities
One of simplest is Frequency
Distribution
Lists pos

Homework # 2
Instructions: For this homework, you will be answering questions
associated with Chapters 3, 4, and 5 in the text. Please see the syllabus
for the requirements on homework.
Chapter 3:
1. The following frequency distribution corresponds to sco

Homework # 1
Instructions: For this homework, you will be answering questions
associated with Chapters 1 and 2 in the text. Please see the syllabus for
the requirements on homework.
Chapter 1
1. Suppose a researcher is studying the amount of time undergra

Chapter 4: Central Tendency
Most frequent shortcut for characterizing a
distribution
Measure of Central Tendency
Single summary figure describing the location
of the whole distribution of scores
3 most common
Mode, Median, Mean
1
Mode (Mo): Score th

Chapter 3: Graphic Representation
of Frequency Distributions
Graph in 2 dimensions, axes
Horizontal axis (Abscissa, X axis)
Vertical axis (Ordinate, Y axis)
Zero point on a graph
The height of the distribution should be
about three-quarters of the wi

Chapter 6: Standard Scores and
the Normal Curve
To describe (summarize distributions)
Shape: unimodal, bimodal, skew
Central tendency: mode, median, mean
Variation: range, variance, standard deviation
Summarizing forces you to loose
information
Some

Chapter 5: Variability and Standard
(z) Scores
Measure of Variability
Single summary figure describing the spread
of observations in the distribution
1
Variability measures include
Range
Semi-Interquartile Range
Average Absolute Deviation
Variance

Introduction to Quantitative
Methods in Psychology
(PSYC1004A)
1
Preliminary Concepts
Research vs. Statistical question
Descriptive vs. Inferential statistics
Sample vs. Population
Statistic vs. Parameter
Constant vs. Variable
2
Research Question:
Are s