PSY-3204
CHAPTER ONE OUTL INE-
I.
Methods of Acquiring Knowledge
A. Authority. One accepts information as being true because someone who is
supposed to know tells you something is true.
B. Rationa
Quiz 1 Study Guide
Chapter 1.
1.
Descriptive statistics:
Used by psychologists to summarize and describe a group of numbers from a research
study.
EX: mean, median, mode, and correlational relationshi
Statistical Methods in Psychology (PSY 3204)
Practice Exam 1
1) Please write down the statistical formulas (conceptual, not computational) that were given in
class for the following terms (26 points).
Chapter 7 Quiz
Questions: 15
1. (Points: 1)
The regression of Y on X _
a. predicts X' given X
b. predicts X given Y
c. predicts Y given Y'
d. predicts Y given X
Save Answer
2. (Points: 1)
Exhibit 7-1
Question 1
1 / 1 pts
Exhibit 1-1 chapter one psy 3204c
Let's assume you are conducting an experiment to determine
the effect of a new drug on the incidence of epileptic seizures.
You select 20 epilept
Let's assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby h
PSY 3204- CHAPTER 3
I.
Constructing Frequency Distributions
A. A list of rank ordered scores and their frequency of occurrence in tabular form
is called a frequency distribution. When the data is r
PSY3204-CHPT.1 EXERCISES AND SOLUTIONS
Exercise
Complete the following questions on a sheet of paper. Check your answers on the Exercise Solutions page.
1. What is the difference between rationalism
P SY3204 C HAPTER 7 QU IZ
1. The regression of Y on X _
a. predicts Y g iven X
2. A researcher collects data on the relationship between the
amount of daily exercise an individual gets and the percent
CHAPTER 6
A scatter plot _.
Student Response 1. must 2. is Correct Answer
be linear
a frequency graph of X values to do with electron scatter a graph of paired X and Y values
3. h
If a stranger gives you a coin and you toss it 1,000,000 times and it lands on heads 600,000 times, what is
p(Heads) for that coin?
0.5000
0.6000
0.4000
0.0000
The statistic used in the sign test meas
The nondirectional alternative hypothesis asserts that _.
the results of the experiment were due to chance alone
no conclusions can be drawn from the experiment
Correct!
the independent variable has a
1. There are five factors that impact power, reviewed in our textbook. Which of the following is not
one of those factors?
Answer: reducing between-group differences.
2. In calculating confidence inte
1. A graduate statistics class is unhappy with the midterm grades. The majority of students scored 45 or
below on a 100-point scale, with just several students performing very well. Which type of dist
1. You are comparing spatial ability scores for four groups. You find that the F statistic for your test is
4.01, and the cutoff value you identified prior to your analysis was 3.45. Do you reject or
1. Why is it necessary according to APA standards to report descriptive statistics for two samples in
addition to reporting the p value?
Answer: They provide additional information about the group dif
T-Test
One-Sample Statistics
N
Days Married
Mean
10
Std. Deviation
7804.0000
Std. Error Mean
10071.32723
3184.83331
One-Sample Test
Test Value = 10
95% Confidence Interval of the
Difference
t
Days Mar
T-Test
Group Statistics
Amount of times stopped
Number of tickets recieved
N
Mean
Std. Deviation
Std. Error Mean
Male
9
3.6667
2.34521
.78174
Female
9
1.1111
1.05409
.35136
Independent Samples Test
Le
No, I do not think that the mean will be a good representation of the center of this data. The reason for
this is because the number 15 is an outlier which will cause the mean to be lowered instead of
Reading the Uses and Abuses section at the end of Chapter 4 notice that there isnt much ethics
that go into it. I believe that an ethical advertisement should be honest, and it doesnt have any
white l
1. The treatment in the experiment was the clown.
2. The control group was the group without the clown.
3. Randomized block design could have been used to improve the experiment by grouping
subjects b
Correlations
Descriptive Statistics
Mean
Number of conversations in
Std. Deviation
N
5.7000
2.58414
10
6.3000
3.46570
10
a day
Number of hours spent on
Social Media
Correlations
Number of conversation
Oneway
Descriptives
DV
95% Confidence Interval for Mean
N
Mean
Std. Deviation
Std. Error
Lower Bound
Upper Bound
Minimum
Maximum
Cat
12
7.9167
1.50504
.43447
6.9604
8.8729
6.00
10.00
Dog
12
7.7500
2.2
1. An example of a recent statistical statement that I observed is a comparison of colleges in
Florida. The website https:/collegescorecard.ed.gov/search/?state=FL&sort=advantage:desc
gave statistics
1. Which statement best describes an interaction in a two-way ANOVA?
Answer: The two independent variables have a combined effect on the dependent variable
that is not present with either independent
A teacher was interested in the relationship between the number of credit hours her students were
registered for that semester, the number of hours they watched TV, and the number of hours of leisure
Chapter 3 Terms/Definitions
scatterplot: A graph that depicts the relation between two scale variables. The values of each variable
are marked along the two axes, and a mark is made to indicate the in