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 twotailed 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 twotailed 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 IBM® SPSS® software to complete the analysis for this problem
6. A public health researcher tested the hypothesis that providing new car buyers with child safety seats will also act as an incentive for parents to take other measures to protect their children (such as driving more safely, childproofing the home, and so on). Dr. L counted all the occurrences of safe behaviors in the cars and homes of the parents who accepted the seats versus those who did not. The findings: a significant difference at the .013 level. Another researcher did exactly the same study; everything was the same—same type of sample, same outcome measures, same car seats, and so on. Dr. R’s results were marginally significant (recall Ch. 9) at the .051 level. Which result do you trust more and why
7. In the following examples, indicate whether you would perform a ttest of independent means or dependent means
Two groups were exposed to different treatment levels for ankle sprains. Which treatment was most effective
A researcher in nursing wanted to know if the recovery of patients was quicker when some received additional inhome care whereas when others received the standard amount
A group of adolescent boys was offered interpersonal skills counseling and then tested in September and May to see if there was any impact on family harmony
One group of adult men was given instructions in reducing their high blood pressure whereas another was not given any instructions
One group of men was provided access to an exercise program and tested two times over a 6month period for heart health
8. For Ch. 12 Data Set 3, compute the t value and write a conclusion on whether there is a difference in satisfaction level in a group of families’ use of service centers following a social service intervention on a scale from 1 to 15. Do this exercise using IBM® SPSS® software, and report the exact probability of the outcome
9. Do this exercise by hand. A famous brandname manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most
10. Using the following table, provide three examples of a simple oneway ANOVA, two examples of a twofactor ANOVA, and one example of a threefactor ANOVA. Complete the table for the missing examples. Identify the grouping and the test variable
11. Using the data in Ch. 13 Data Set 2 and the IBM® SPSS® software, compute the F ratio for a comparison between the three levels representing the average amount of time that swimmers practice weekly (< 15, 15–25, and > 25 hours) with the outcome variable being their time for the 100yard freestyle. Does practice time make a difference? Use the Options feature to obtain the means for the groups
12. When would you use a factorial ANOVA rather than a simple ANOVA to test the significance of the difference between the averages of two or more groups
13. Create a drawing or plan for a 2 × 3 experimental design that would lend itself to a factorial ANOVA. Identify the independent and dependent variables
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 Exercise 14 is in the data file named Lesson 22 Exercise File 1.
14. John is interested in determining if a new teaching method, the involvement technique, is effective in teaching algebra to first graders. John randomly samples six first graders from all first graders within the Lawrence City School System and individually teaches them algebra with the new method. Next, the pupils complete an eightitem algebra test. Each item describes a problem and presents four possible answers to the problem. The scores on each item are 1 or 0, where 1 indicates a correct response and 0 indicates a wrong response. The IBM® SPSS® data file contains six cases, each with eight item scores for the algebra test.
Conduct a onesample t test on the total scores. On the output, identify the following
15. Marvin is interested in whether blonds, brunets, and redheads differ with respect to their extrovertedness. He randomly samples 18 men from his local college campus: six blonds, six brunets, and six redheads. He then administers a measure of social extroversion to each individual.
Conduct a oneway ANOVA to investigate the relationship between hair color and social extroversion. Conduct appropriate post hoc tests. On the output, identify the following
Part C
Complete the questions below. Be specific and provide examples when relevant.
Cite any sources consistent with APA guidelines
What is meant by independent samples? Provide a research example of two independent samples
When is it appropriate to use a t test for dependent samples? What is the key piece of information you must know in order to decide
When is it appropriate to use an ANOVA? What is the key piece of information you must know in order to decide
Why would you want to do an ANOVA when you have more than two groups, rather than just comparing each pair of means with a t test
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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 ....

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For each of the tests of reliability and validity listed on the matrix, prepare a 50 to 100word 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 100word d....

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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 se....

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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 ....

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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 followin....

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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:
Questi....

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PSYCH 625 Week 3 Learning Team Assignment Statistics Project Descriptive Statistics
....

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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....

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PSYCH 625 Week 4 Learning Team Assignment Statistics Project Comparing Means
....

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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 dat....

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PSYCH 625 Week 5 Learning Team Assignment Statistics Project Correlations
....

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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 Assignme....

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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.
....

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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 e....

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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?
&nb....

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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 reason....

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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. ....

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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 t....

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Complete both Part A and Part B below.
Part A
Before completing the following questions, be sure to have read Appendix C and the Statistical Software Resources at the ends of Chapters 2 and 3 from Statistics Plain and Simple.
Highlight the required ans....

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Probability and Statistical Analysis Worksheet
Complete Parts A, B, and C below.
Part A
Why is a z score a standard score? Why can standard scores be used to compare scores from different distributions? Why is it useful to compare different distributio....

PSYCH 625 Assignment Week 3 Identifying Statistical Tests in the Literature Worksheet (New Syllabus)
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Identifying Statistical Tests in the Literature Worksheet
Research in the University Library to find three empirical (those containing data) research articles using one of the analytic methods studied this week (i.e., z test, independent sample t test, repeated measures t test).&nb....

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Comparing Means Worksheet
The following questions require that you access Microsoft® Excel® for analysis. The team must work together to solve these questions.The data set for this assignment is located in the Pulse Rate Dataset.
1. John is interested in determ....

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PSYCH 625 Assignment Week 5 Correlation Worksheet (New Syllabus)
....

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ChiSquare Worksheet
Part 1: Interpret ChiSquare Results
Review the following output from a chisquare test, and answer the questions below.
ChiSquare Test Frequencies:
a 0 cells (0.0%) have expected frequencies less t....

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The Statistics Project assignment has been broken down into multiple parts and you will complete these parts throughout the course. This week's assignment allows you to become familiar with opening data and viewing it in Microsoft® Excel® and using the Analysis Toolpak. In research, the individua....

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Now that you have run descriptive statistics with your data, it is time to create a hypothesis and test your hypothesis. This part of the Statistics Project will take you through the process of creating and testing your hypothesis through statistical methods, using Microsoft® Excel®. Creating hyp....

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As you get closer to the final project in Week 6, you should have a better idea of the role of statistics in research. This week, you will calculate a oneway ANOVA for the independent groups. Reading and interpreting the output correctly is highly important. Most people who read research article....

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For this assignment, you will calculate the Pearson productmoment correlations between at least two sets of variables in the Happiness and Engagement Dataset.
Perform one correlation between two independent variables, such as Age and Relationship with Coworkers.
Perform the second correl....

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You have made it to the final step of your individual project. In this assignment, you will develop the skills needed to compile statistics as a part of the research process.
Imagine you must present your research findings to your Human Resources department.
Create a 12 to 15slide Micro....

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PSYCH 625 Assignment Week 1 Descriptive and Inferential Statistics Worksheet (New Syllabus)
PSYCH 625 Assignment Week 2 Probability and Statistical Analysis Worksheet (New Syllabus)
PSYCH 625 Assignment Week 3 Identifying Statistical Tests in the Literature Worksheet (New Syllabus)
PS....
