Chapter 7
Probability and Samples: The
Distribution of Sample Means
PowerPoint Lecture Slides
Essentials of Statistics for the
Behavioral Sciences
Eighth Edition
by Frederick J. Gravetter and Larry B. Wallnau
Chapter 7 Learning
Outcomes
Tools You Will Nee
PSYC 354
HOMEWORK 7
Confidence Intervals, Effect Size, and Statistical Power
Part I: Questions 1a-1e
Fill in the highlighted blanks with the best word or words.
1-a)
The confidence interval is centered around the mean of the sample.
1-b)
Cohen's d measure
Chapter 8
Introduction to Hypothesis
Testing
PowerPoint Lecture Slides
Essentials of Statistics for the
Behavioral Sciences
Eighth Edition
by Frederick J. Gravetter and Larry B. Wallnau
Chapter 8 Learning
Outcomes
Tools You Will Need
z-Scores (Chapter 5)
PSYCH 295 STATISTICAL METHODS
Chapter 2 Frequency Distributions
Practical Exercise
3. Find each value requested for the distribution of scores in the following table.
X
f
5
4
3
2
1
2
3
5
1
1
a. n
b. X
c, X2
5. For the following scores, the smallest value
PSYCH 295 STATISTICAL METHODS
Chapter 3: Central Tendency
Practical Exercise
5. Find the mean, median, and mode for the scores in the following frequency distribution table:
X
f
8
7
6
5
4
3
1
1
2
5
2
2
a. Calculate the mean (M) for the frequency distribut
PSYCH 295 STATISTICAL METHODS
Chapter 12: Introduction to Analysis of Variance (ANOVA)
Practical Exercise
3. Why should you use an ANOVA instead of several t tests to evaluate mean differences when
an experiment consists of three or more treatment conditi
PSYCH 295 STATISTICAL METHODS
Chapter 7: Probability and Samples The Distribution of Sample Means
Practical Exercise
1. Describe the distribution of sample means (shape, expected value, and standard error) for samples
of n = 100 selected from a population
PSYCH 295 STATISTICAL METHODS
Chapter 9: Introduction to the t Statistic
Practical Exercise
1. Under what circumstances is a t statistic used instead of a z-score for a hypothesis test?
7. The following sample was obtained from a population with unknown p
PSYCH 295 STATISTICAL METHODS
Chapter 8: Introduction to Hypothesis Testing
Practical Exercise
1. The value of the z-score in a hypothesis test is influenced by a variety of factors. Assuming
that all other variables are held constant, explain how the val
CHAPTER 1
INTRODUCTION TO STATISTICS
CHAPTER OUTLINE
Introduction - Statistics Defined
Populations and Samples
Research Methods - Major Types
Scales of Measurement
Classification of Variables
SPSS Computer Software - Data
Entry by Spreadsheet
INTROD
CHAPTER 1
INTRODUCTION TO STATISTICS
CHAPTER OUTLINE
Introduction - Statistics Defined
Populations and Samples
Research Methods - Major Types
Scales of Measurement
Classification of Variables
SPSS Computer Software - Data Entry by Spreadsheet
INTROD
CHAPTER 7
Probability and Sampling Distributions
2014 SAGE Publications
1
C HAPT ER O UT LINE
Inferential Statistics and Sampling Distributions
Sampling and Conditional Probabilities
Selecting a Sample
Sampling Strategy: The Basis for Statistical The
For Chapter 7 complete the following End-of-Chapter problems starting on page 225, #s 2-6, 11,
12, 13-17, 25, and 26.
Bring your answers to class on Tuesday.
2. Sampling without replacement and conditional probabilities are related in that when we sample
PSYCH 295 STATISTICAL METHODS
Chapter 4: Variability
Practical Exercise
1. In words, explain what is measured by each of the following:
a. SS:
b. Variance:
c. Standard deviation:
5. Explain why the formulas for sample variance and population variance are
Chapter 8
Introduction to Hypothesis Testing
2014 SAGE Publications
1
Chapter Outline
Definition of Hypothesis Testing
Steps of Hypothesis Testing
Types of Error
Alpha and Power
One-Sample z Test
One vs. Two-Tailed Tests
Effect and Effect Size
Cohens d
P
Chapter 3
Summarizing Data
Central Tendency
Class Points
%
f
90 100
26
80 89
20
70 79
13
60 69
4
50 59
0
40 49
0
30 39
1
20 29
1
Total
65
Chapter Outline
Central Tendency
Measures of Central Tendency
Characteristics of the Mean
Using the Mean to Descr
1
CHAPTER 4
Summarizing Data
Variability
2014 SAGE Publications
2
CHAPTER OUTLINE
Measuring Variability
Range and Midrange
Quartiles and Interquartiles
Variance
Explaining Variance
Definitional and Computational Formula for Variance
Standard Devia
Running Head: Forgiveness and Reconciliation
Forgiveness and Reconciliation
Liberty University
Ericka Castillo
1
Forgiveness and Reconciliation
2
Abstract
In todays society marriage is not viewed as the rewarding, sanctify act anymore,
it is viewed or tal
RUNNING HEAD: Case Study: Liya
Ericka Castillo
Case Study
Liberty University
August
Case Study: Liya
2
Case Study: Child with autism
Liya Genet is a 12 year old girl with autism. Liya was diagnosed with autism when she
was four years old. Mom noticed that
Running Head: CHILDCARE WELFARE
1
Child Welfare
Ericka Villegas
HSCO 500
Liberty University
CHILD WELFARE
2
Child Welfare
One of the main issue in todays times is child welfare. Many children are not being well
taken care, they have been neglected, abused
COMMUNICATION
What is communication?
COMMUNICATION
Communication is the process of
exchanging information and meaning
between or among individuals
through a common system of
symbols, signs, and behavior.
(Lehman, C., & DuFrene, D. 2014)
3 PURPOSE TO USE
C
CHILD WELFARE
1
WORKING OUTLINE EXAMPLE
I.
II.
WITH INSTRUCTIONS
ABSTRACT
WHAT IS CHILD WELFARE
a. Definition
b. Key element ( agency)
c. How to report an incident
III.
CHILD WELFARE/ ECONOMY
a. Money used on welfare
IV.
FOSTER FAMILY
a. Identifying legal
PSYC 354
HOMEWORK 1
Introduction to Statistics
All Questions
Part I: Concepts
These questions are based on the Nolan and Heinzen reading and
end-of-chapter questions.
Fill in the blank with the appropriate word or words.
1. A researcher counts the number
PSYC 354
HOMEWORK 6
Percentiles and Hypothesis Testing with Z-Tests
Part I: Questions 1-7
End-of-chapter problems:
Answer the following questions.
If applicable, remember to show work in your homework document for partial credit.
1) What are the 6 steps o
PSYC 354
HOMEWORK 2
Frequency Tables and Graph
1) Use the information in the table to determine the percentages for each interval. Depending on your rounding
decisions, these may or may not add up to exactly 100% but should be very close.
Table: Grouped F
PSYC 354
HOMEWORK 1
Introduction to Statistics
Fill in the blank with the appropriate word or words.
1. The _ population_is the large group about which you want to know something
2. A(n) _Samples is a set of observations drawn from the larger group of int
2014 SAGE Publications
1
CHAPTER 5
PROBABILITY
2014 SAGE Publications
2
CHAPTER OUTLINE
Probability and Calculating Probability
Probability and Relative Frequency
Relationship Between Multiple Outcomes
Conditional Probabilities and Bayes Theorem
Pr
EXAM 1 STUDY GUIDE:
Chapter 1:
Understand the differences between descriptive and inferential statistics.
Be familiar with different methods of research discussed in lecture and the book. Be able
to describe and differentiate between the methods.
Be fami
Chapter 2
Summarizing Data
Tables, Graphs, and Distributions
2014 SAGE Publications
Chapter Outline
Frequency and Frequency Distribution
Simple Frequency Distribution
Frequency Distribution for Grouped Data
Steps to Summarize Grouped Data
Cumulative
Chapter 12
Introduction to Analysis of Variance
PowerPoint Lecture Slides
Essentials of Statistics for the
Behavioral Sciences
Eighth Edition
by Frederick J. Gravetter and Larry B. Wallnau
Chapter 12 Learning
Outcomes
Tools You Will Need
Variability (Cha
Psychology 295 questions
Ch.14
1.What correlation is obtained when the Pearson correlation is computed for
data that have been converted to ranks?
b.TheSpearmancorrelation
2.A set of n = 25 pairs of scores (X and Y values) has a Pearson correlation of r =