PSY 230
Module 2, Assignment (A-2)
Q1) Behavioral scientists know that both genetics and environment play a role in most
human characteristics. Correlation studies are often used to help determine whether
certain human characteristics are controlled more
PSY 230
Week 7 Extra Credit
Training Skills of Divided Attention among Older Adults
Ilmiye Seer
Department of Psychology, Eastern Mediterranean University, North Cyprus
Lata Satyen
School of Psychology, Deakin University, Australia
The article I chose pea
PSY 230
Module 7, Assignment (A-7)
Q1a) Conduct a Chi-Square Test for Goodness of Fit.
STEP 1: STATE HYPOTHESES
Population 1: Food Rewards like those in the study
H0: The distribution of observations over categories in the two populations
are the same
Pop
Module 5 Assignment (A-5)
For this assignment you will use multiple data sets, each embedded within the assignment below.
Q1 and Q2:
Steven Schmidt (1994) conducted a series of experiments examining the e
Activities/Exercises
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Calculator Practice 4 points
Last Name
X Data Set 1
X Data Set 2
X Data Set 3
First Name
12
7
-3
6
-14
6
0
5
2
10
8
6
-2
7 13
22 37 0 -24 -56 12 19 -12 33
5
-5
8
9
Part 1 - Enter the data se
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 5 Practice Problems
1.
A population of scores has = 55 and = 10. Find the raw score (X) for each of the
following z-scores in this population. Show your work.
X
z = 1.25
z = -
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 3 Practice Problems, Part 2
As a component of this assignment you are required to cite the textbook authors at least two
times in your responses (you might find the need to us
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 2 Practice Problems, Part 1
3 points
Last Name
First Name
1a. For the following set of scores, complete the cumulative grouped frequency distribution
tables below.
64, 75, 50,
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 3 Practice Problems, Part 1
Last Name
1a.
First Name
Fill in the missing information associated with the frequency distribution below.
X
f
Xf
5
10
50
4
6
3
2
2
1
1
1
b.
Calcul
CHAPTER 6: PROBABILITY
Why study probability?
A. Inferential statistics used limited information from a
sample to draw general conclusions about a population
1. The relationship between samples and populations is
usually stated in terms of probability
B.
CHAPTER 10: THE t TEST FOR
TWO INDEPENDENT SAMPLES
Chapter Overview
A. Things get a little more 'complicated' in Chapter 10
compared to Chapter 9
1. Chapters 8 and 9 involved single population hypothesis
tests
a. Cats sleep about 18 hours per day
b. Adul
CHAPTER 11: THE t TEST
FOR RELATED SAMPLES
Independent or between (Chapter 10) vs related or within
(Chapter 11) sample designs
A. Independent (between) sample designs utilize two
independent subject groups
1. Subjects are randomly selected and randomly
CHAPTER 9: INTRODUCTION
TO THE t STATISTIC
General Information
A. In chapter 8, you calculated the z test statistic
1. z is used when
a. However,
and
and
are know
are usually not known!
B. In chapter 9, you will calculate the t test statistic
1. t tests
CHAPTER 5:
STANDARDIZED DISTRIBUTIONS
Standardized distributions
A. Consist of scores that have been transformed from their
original raw score distribution
1. The transformed or standardized scores are called
z-scores
Formula for standardizing a raw sco
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 6 Practice Problems, Part 1
1.
For a normal distribution with a mean of = 80 and = 12,
Ex:
What is the probability of randomly selecting a score greater than 83? (Plot and 2 o
Activities/Exercises
1.
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 6 Practice Problems, Part 2
For a normal distribution with 500 and 30 ,
a.
The percentile rank
Page 1
z=
X
; _ = _
for X = 575 is:
Use the unit normal table and identify the corr
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 5 Practice Problems
1.
A population of scores has = 55 and = 10. Find the raw score (X) for each of the
following z-scores in this population. Show your work.
X z
z = 1.25
67
PSY 230
Module 3, Assignment (A-3)
Q1) Find the z values that form the boundaries of the critical region for a two-tailed test with = .05 for each of the
following sample size (n) values.
a) n = 9 -1.96 and +1.96
b) n = 16 -1.96 and +1.96
c) n = 24 -1.96
Julie Leau
1/17/16
PSY 230
Module 1, Assignment (A-1)
Q1) Create a frequency table for three of the following categorical variables.
X
X
a) Gender (Table 1-1)
B) Month Born
c) Birth Order (Table 1-2)
d) Political Affiliation
e) Favorite Season
Table 1-1
G
PSY 230
Module 4, Assignment (A-4)
Q1) Find the t values that form the boundaries of the critical region for a two-tailed test with = .05 for each of the
following sample size (n) values.
a) n = 9 (df=8), -2.306 and +2.306
b) n = 16 (df=15), -2.132 and +2
PSY 230
Module 5, Assignment (A-5)
For Q1 and Q2:
Steven Schmidt (1994) conducted a series of experiments examining the effects of humor on
memory. In one study, participants were given a mix of humorous and non-humorous
sentences and significantly more h
PSY 230
Module 6, Assignment (A-6)
Q1) Use the United States Based Sample to compute the following statistics. Use Political View as the grouping (independent) variable.
a) Between-Group Variance
b) Within-Group Variance
S2M = (M-GM)2
dfBetween
S2Within =
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 2 Practice Problems, Part 1
3 points
1a. For the following set of scores, complete the cumulative grouped frequency distribution
tables below.
64, 75, 50, 67, 86, 66, 62, 64,
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 4 Practice Problems, Part 1
3 points
Last Name
1.
For the following scores:
37,
a.
First Name
13,
4,
11, 36,
24,
18
Calculate M, X , and X 2 on your calculator (NO HAND COMPUT
Activities/Exercises
Page 1
PSYCHOLOGY 230: MEASUREMENTS AND STATISTICS
Chapter 4 Practice Problems, Part 1
Last Name
1.
For the following scores:
37,
a.
13,
4,
11, 36,
17,
24,
18
Calculate M, X , and X 2 on your calculator (NO HAND COMPUTATIONS)
M=
b.
Fi
Assignment A-2: Correlations
For this assignment, you will use multiple embedded data sets. (Worth 50 points)
Q1) Behavioral scientists know that both genetics and the environment play a role in most
human characteristics. Correlation studies are often us
Assignment A-3: Hypothesis Testing using the Z statistic
For this assignment, you will use multiple data sets.
Q1) Find the z values that form the boundaries of the critical region for a two-tailed test
with =.05 for each of the following sample size (n)