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PSYCH 625 Entire Course

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PSYCH 625 Week 1 Individual Assignment Basic Concepts in Statistics Worksheet PSYCH 625 Week 1 Individual Assignment Reliability and Validity Matrix PSYCH 625 Week 1 Individual Assignment Time to Practice – Week One PSYCH 625 Week 2 Individual Assignment Time to Practice – Week Two PSYCH 625 Week 2 Learning Team Assignment Statistics Project Import Data Into IBM ® SPSS ® Software PSYCH 625 Week 3 Individual Assignment Time to Practice – Week Three PSYCH 625 Week 3 Learning Team Assignment Hypothesis Testing Problem Worksheet PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics PSYCH 625 Week 4 Individual Assignment Time to Practice – Week Four PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means PSYCH 625 Week 5 Individual Assignment Programmatic Assessment Time to Practice – Week Five


PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations PSYCH 625 Week 6 Learning Team Assignment Statistics Project Presentation ***************************************************** PSYCH 625 Individual Assignment Reliability and Validity Matrix

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For each of the tests of reliability and validity listed on the matrix, prepare a 50to 100-word description of the test’s application. Describe what conditions these reliability types would be used for as well as when they would be inappropriate. Then, for each test, prepare a 50- to 100-word description of the strengths and a 50- to 100-word description of the weaknesses. ***************************************************** PSYCH 625 Week 1 DQs

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DQ 1: As we begin our venture into statistics, let's pause to examine the role of research in psychology. Psychology is the science of behavior. We think of psychology as counseling, introspection, learning, cognition, etc. How can these processes be the subject of research? How do we reconcile the discipline and rigor


of good research with the ambiguity of human emotions and motivations? What is the role of research in psychology? DQ 2: Many people feel nervous around math, but what we really need to fear is the selective interpretation of data! For most of us, 1 + 1 = 2, but in the hands of some, 1 + 1 can be "spun" to support specific agenda. Think about commercials or news clips that you may have seen recently. In what subtle ways might data have been used to influence the listener/viewer? For example, when we hear, "Four out of five dentists recommend Glittering Grin toothpaste!" is it correct to assume that 100 dentists were polled and 80 voted for Glittering Grin? ***************************************************** PSYCH 625 Week 1 Individual Assignment Basic Concepts in Statistics Worksheet

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Complete the following questions. Be specific and provide examples when relevant. Cite any sources consistent with APA guidelines. What are statistics and how are they used in the behavioral sciences? Your answer should be 100 to 200 words. Differentiate between descriptive and inferential statistics. What information do they provide? What are their similarities and differences? Your answer should be 250 to 400 words. What is a population? What is a sample? How are they similar and how are they different? When would you use one or the other? Your answer should be 250 to 400 words. Go to the library and find a journal article in your area of interest that contains empirical data, but does not contain any visual representation of the data. Use the


data to create a chart. Specify what type of chart you are creating, and why you chose the one you did. You can create the chart manually or using IBM® SPSS® software or a Microsoft® Excel® document. The chart may be pasted into this document or submitted as an attachment with this document. ***************************************************** PSYCH 625 Week 1 Individual Assignment Time to Practice – Week One

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Part A Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Test Resources link. 1. By hand, compute the mean, median, and mode for the following set of 40 reading scores 2. Compute the means for the following set of scores saved as Ch. 2 Data Set 3 using IBM® SPSS® Print out a copy of the output. 3. You are the manager of a fast food store. Part of your job is to report which special is selling best to the boss at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the boss know what happened today. Use the following data. Do not use IBM® SPSS® software to compute the statistics needed; rather, do it by hand. Include a copy of your work ***************************************************** PSYCH 625 Week 2 DQs

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DQ 1: More and more, we are asked to document impact and to measure outcomes. We are asked to provide information about a variety of things through as many varieties of ways. When we go to stores and they ask us for a zip code or phone number. The list could go on and on. You text talks about descriptive statistics and suggests that they are used to make a group of numbers understandable in a research study. While that is certainly the case, we use descriptive statistics in a number of other ways. ***************************************************** PSYCH 625 Week 2 Individual Assignment Time to Practice – Week Two

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Complete Parts A, B, and C below. Part A Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Text Resources link. 1. Why is a z score a standard score? Why can standard scores be used to compare scores from different distributions 2.For the following set of scores, fill in the cells. The mean is 70 and the standard deviation is 8 3. Questions 3a through 3d are based on a distribution of scores with and the standard deviation = 6.38. Draw a small picture to help you see what is required 4. Jake needs to score in the top 10% in order to earn a physical fitness certificate. The class mean is 78 and the standard deviation is 5.5. What raw score does he need 5. Who is the better student, relative to his or her classmates? Use the following table for information


Part B Some questions in Part B require that you access data from Using SPSS for Windows and Macintosh. This data is available on the student website under the Student Text Resources link. The data for Exercises 6 and 7 are in the data file named Lesson 20 Exercise File 1. Answer Exercises 6 and 7 based on the following research problem: Ann wants to describe the demographic characteristics of a sample of 25 individuals who completed a large-scale survey. She has demographic data on the participants’ gender (two categories), educational level (four categories), marital status (three categories), and community population size (eight categories). ***************************************************** PSYCH 625 Week 3 DQs

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DQ 1: Please read the following article in your Electronic Readings, Null Hypothesis, CLOSED THINKING: Without scientific competition and open debate, much psychology research goes nowhere DQ 2: It is suggested that significance tests should be banned for two reasons, (1) that there is a tendency for researchers to accept the null hypothesis as true because the result is not significant and (2) significance is confused with a large effect size. ***************************************************** PSYCH 625 Week 3 Individual Assignment Time to Practice – Week Three

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Complete both Part A and Part B below. Part A Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Test Resources link. 1. For the following research questions, create one null hypothesis, one directional research hypothesis, and one nondirectional research hypothesis What are the effects of attention on out-of-seat classroom behavior What is the relationship between the quality of a marriage and the quality of the spouses’ relationships with their siblings What is the best way to treat an eating disorder 2. Provide one research hypothesis and an equation for each of the following topics The amount of money spent on food among undergraduate students and undergraduate student-athletes The average amount of time taken by white and brown rats to get out of a maze The effects of Drug A and Drug B on a disease The time to complete a task in Method 1 and Method 2 3. Why does the null hypothesis presume no relationship between variables 4. Create a research hypothesis tested using a one-tailed test and a research hypothesis tested using a two-tailed test 5. What does the critical value represent 6. Given the following information, would your decision be to reject or fail to reject the null hypothesis? Setting the level of significance at .05 for decision making, provide an explanation for your conclusion ***************************************************** PSYCH 625 Week 3 Learning Team Assignment Hypothesis Testing Problem Worksheet

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Research in the University Library to find five empirical (those containing data) research articles. Select articles that are of interest to you and include the citations at the end of this document. Place the information for each one in the following tables: Title of Article: Question Answer What is the null hypothesis (implied or explicitly stated)? What is the research hypothesis (implied or explicitly stated)? Using the content in any of these articles, create another research hypothesis. Title of Article: Question Answer What is the null hypothesis (implied or explicitly stated)? ***************************************************** PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics

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PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics ***************************************************** PSYCH 625 Week 4 DQs


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WEEK 4: DQ 1: What is a research question each of you would like to research? What are independent and dependent variables? What would your hypothesis be? Using the decision tree on page 255 of Statistics for People Who (think they) Hate Statistics as a resource, identify which statistical test you would use to test your hypothesis. Tell us why you selected that particular test. DQ 2: Let's take some time this week and look at some data that is used to make up reports through the Anne E. Casey Foundation. The Foundation published a document called Kid's Count which is a collection of significant information about risk factors for kids. Please go to the Foundation's website at www.aecf.org, find the information for your state, review some of the key data, tell us what you might use the data for and what are some of the problems with the data, especially as you look at census data atwww.census.gov Datafinder, in comparison to kids' count data. ***************************************************** PSYCH 625 Week 4 Individual Assignment Time to Practice – Week Four

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Complete Parts A, B, and C below. Part A Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Text Resources link.


1. Using the data in the file named Ch. 11 Data Set 2, test the research hypothesis at the .05 level of significance that boys raise their hands in class more often than girls. Do this practice problem by hand using a calculator. What is your conclusion regarding the research hypothesis? Remember to first decide whether this is a one- or two-tailed test 2. Using the same data set (Ch. 11 Data Set 2), test the research hypothesis at the .01 level of significance that there is a difference between boys and girls in the number of times they raise their hands in class. Do this practice problem by hand using a calculator. What is your conclusion regarding the research hypothesis? You used the same data for this problem as for Question 1, but you have a different hypothesis (one is directional and the other is nondirectional). How do the results differ and why 3. Practice the following problems by hand just to see if you can get the numbers right. Using the following information, calculate the t test statistic 4. Using the results you got from Question 3 and a level of significance at .05, what are the two-tailed critical values associated with each? Would the null hypothesis be rejected 5. Using the data in the file named Ch. 11 Data Set 3, test the null hypothesis that urban and rural residents both have the same attitude toward gun control. Use IBMÂŽ SPSSÂŽ software to complete the analysis for this problem ***************************************************** PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means

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PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means ***************************************************** PSYCH 625 Week 5 DQs


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DQ 1: Thomas Bayes who was an English Clergyman in the early 18th century who is known for the Bayes' Theorem. The theorem suggests that science is about conducting research in order to adjust our preexisting beliefs in light of the evidence collected. Conclusions drawn from an experiment are always in the context of what we believed about the world before the experiment. Others suggest that it is better not to make any assumptions about prior beliefs. (Aron, Aron & Coups, 2006) Where do you weigh in on this debate? Do you think we do research in order to validate something we already believe to be true or false? DQ 2: When two variables are correlated, it means that they are associated with one another. But if they are associated with one another, then why doesn't one cause the other? ***************************************************** PSYCH 625 Week 5 Individual Assignment Programmatic Assessment Time to Practice – Week Five

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Complete Parts A, B, and C below. Part A


Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Text Resources link. 1. Use the following data to answer Questions 1a and 1b Compute the Pearson product-moment correlation coefficient by hand and show all your work Construct a scatterplot for these 10 values by hand. Based on the scatterplot, would you predict the correlation to be direct or indirect? Why 2. Rank the following correlation coefficients on strength of their relationship (list the weakest first) 3. Use IBM® SPSS® software to determine the correlation between hours of studying and grade point average for these honor students. Why is the correlation so low 4. Look at the following table. What type of correlation coefficient would you use to examine the relationship between ethnicity (defined as different categories) and political affiliation 5. When two variables are correlated (such as strength and running speed), it also means that they are associated with one another. But if they are associated with one another, then why does one not cause the other 6. Given the following information, use Table B.4 in Appendix B of Statistics for People Who (Think They) Hate Statistics to determine whether the correlations are significant and how you would interpret the results The correlation between speed and strength for 20 women is .567. Test these results at the .01 level using a one-tailed test The correlation between the number correct on a math test and the time it takes to complete the test is –.45. Test whether this correlation is significant for 80 children at the .05 level of significance. Choose either a one- or a two-tailed test and justify your choice The correlation between number of friends and grade point average (GPA) for 50 adolescents is .37. Is this significant at the .05 level for a two-tailed test 7. Use the data in Ch. 15 Data Set 3 to answer the questions below. Do this one manually or use IBM® SPSS® software Compute the correlation between income and level of education Test for the significance of the correlation What argument can you make to support the conclusion that lower levels of education cause low income 8. Use the following data set to answer the questions. Do this one manually ***************************************************** PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations


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PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations ***************************************************** PSYCH 625 Week 6 DQs

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DQ 1: We have looked at a number of important statistical concepts over the past few weeks and there is value in considering how some of those concepts are employed to drive decisions that impact all of us and our families. ***************************************************** PSYCH 625 Week 6 Learning Team Assignment Statistics Project Presentation

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PSYCH 625 Week 6 Learning Team Assignment Statistics Project Presentation *****************************************************

PSYCH 625 Possible Is Everything--snaptutorial.com  

For more classes visit www.snaptutorial.com PSYCH 625 Week 1 Individual Assignment Basic Concepts in Statistics Worksheet PSYCH 625 Week...

PSYCH 625 Possible Is Everything--snaptutorial.com  

For more classes visit www.snaptutorial.com PSYCH 625 Week 1 Individual Assignment Basic Concepts in Statistics Worksheet PSYCH 625 Week...

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