What is the sample standard deviation

Assignment Help Applied Statistics

Reference no: EM133612922

Single-Factor Practice

Single Factor Practice SPSS in Practice

Previous research indicates that people who identify as men have more Dark Triad traits than people who identify as women.Use the dataset from our Survey study to test this hypothesis.Because previous research has not examined these traits in non-binary individuals, and because our sample of non-binary individuals was so small, we will not test them in the current analysis.

1. What is the Independent variable in the study described above? What are the levels of the independent variable?

2. Is this a true experiment (the experiment described above)? Why or why not?

3. What is the dependent variable? How was the dependent variable measured in the data?

4. What is the hypothesis for this test? Remember a good hypothesis is specific!

Run the correct analysis in SPSS. (To decide what statistical test to use, consider how many levels of your IV there are. Hint: This is a statistical test we did several times at the beginning of the semester!)

1. What is the sample mean for women? What is the sample standard deviation?

2. What is the sample mean for men? What is the sample standard deviation?

3. Report your result in correct APA notation.

4. Was the hypothesis supported? Why or why not?

5. Using the instructions for creating a bar graph in Excel, construct a bar graph of the results of this test in correct APA format (Hint: Instead of frequencies, you are graphing means!). Include your graph with your assignment submission!

Your Research Methods professor conducted a survey asking students how much time they spent studying in their Psychology statistics course and how much they thought you should spend studying to earn an A in the Statistics course. She is interested to see if there is a significant difference between the time students actually studied and the time they thought someone should study to earn an A.

Use the dataset "Data for t-test practice" (from Lab #2) to answer this question. There is a copy on the Lab 9 module page.

1. Is this a between-subjects or within-subjects research design? How do you know?

2. Is this a true experiment? Why or why not?

3. Develop a hypothesis for this test. Remember to clearly specify which mean score will be higher (did study or should study) in your prediction. (Do not just say there will be a difference.)

1. What is the sample mean for minutes students actually studied? What is the sample standard deviation?

2. What is the sample mean for minutes need to study to earn an A? What is the sample standard deviation?

3. Report your result in correct APA notation. (Pay attention to what column reports the t-value!)

4. Was the hypothesis supported? Why or why not?

It's not just important to be able to conduct statistical analyses, but we also need to be able to interpret statistics we read in published journal articles.

For this activity: Read the excerpt from "Does playing violent video games..." (McCarthy et al., 2016)on the Lab #9 Module Page and then answer the following questions.
1. Is this a true experiment? Why or why not?
2. What is the independent variable for this experiment? What are the levels of the IV?
3. What is the dependent variable for this experiment? How was it measured? (Hint:It's measured in more than 1 way!)
4. Did the researchers support their hypothesis? What information in the Results and Discussion section did you use to determine this?
5. In the Materials section, the authors state they gave participants a video game rating scale questionnaire to "account for individuals' perceptions of their game." Why is it important they included this questionnaire?
6. The researchers utilized several control variables in their study. Provide one of them and explain how it operated as a control variable.
7. Given our discussion of null effects in research, which reason for null effects could explain what happened in this study? Note - there are several possible answers.
8. In the full article, the authors discuss that their findings are important even though they are not significant. If you were interested in studying this topic, what is one thing you could do to improve their study design? (Be specific in your answer - don't say something like: fix the method)

Reference no: EM133612922

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