social statistics, sociology assignment help
Order ID: 89JHGSJE83839 Style: APA/MLA/Harvard/Chicago Pages: 5-10 Instructions:
SOC 390: Social Statistics I
SPSS (50 points)Instructions:For this portion of the exam, you will be provided with a dataset. Make sure you follow all of the directions for each question below (pay attention to details!). When you have completed all of the questions, submit your completed document to Blackboard. Remember to save your work as you go. Round your answers to 2 decimal places. Also, if you get a p-value that = .000, round to .001.
Data: Download/open the SPSS dataset, which is located in the Exam 3 folder: EXAM 3SOC390 data.
RESEARCH SCENARIO 1 [10 points]:
Hypothetically, I collected data on how much participants like statistics (variable name = like_stats) at the beginning of the semester using a scale of 0 = strongly disagree to 4 = strongly agree. After myinitial data collection, I implemented an intervention aimed at improving participants feelings regarding statistics. After the intervention, I measured the same participants with the same measure to get a posttest measure of how much participants like statistics (variable name = POST_like_stats).Help me determine if pretest statistics liking significantly differs from posttest statistics liking. HINT: To avoid confusion regarding sign (+/-) of the observed value, subtract the posttest from the pretest (pretest-posttest) when entering your variables into the SPSS dialog box.
1a. Which of the following is the null hypothesis?Highlight or circle your answer. [.5 points]
a) H0: µpre = µpost
b) H1: µpre = µpost
c) H0: µpre? µpost
d) H1: µpre? µpost1b. Although we think the intervention will improve ratings, we are going to use a non-directional research hypothesis. Which of the following is the alternative, or research, hypothesis? Highlight or circle your answer. [.5 points]
a) H0: Xpre = Xpost
b) H1: Xpre = Xpost
c) H0: Xpre?Xpost
d) H1: Xpre?Xpost2. Which test is needed to answer this question? Highlight or circle your answer. [.5 point]
a) one-sample t-test
b) one way ANOVA
c) independent samples t-test
d) dependent samples t-test3. Run the test in SPSS.
a. What was the t-statistic? _________ [1 point]
b. What were the confidence intervals? ________ [1 point]
c. What was the p-value? _______ [1 point]
d. PASTE YOUR SPSS OUTPUT HERE! [2 points]4. Based on your SPSS analysis, what is your decision regarding the null (reject or fail to reject)? [.5 point]
5. Write up your results in APA format. Your write-up should include sample mean(s)/standard deviation(s), t-statistics, degrees of freedom, p-value, and a conclusion. (use the examples from lecture). [3 points]
RESEARCH SCENARIO 2 [10 points]:
I want to compare the mean Exam scores (Variable name = Exam_scores) between different sections of SOC390 (Variable name = Class). In this data set we have three classes (1= Miller, 2 = Field, 3= Smith). Using the SPSS data, conduct a One-way ANOVA where Class is your factor and Exam_scores is your dependent variable. For Post hoc tests, select Tukey. Under Options, select descriptives, homogeneity of variance test, and means plot.6a. Which of the following is the null hypothesis?Highlight or circle your answer.[.5 points]
a) H0: µ1 = µ2 = µ3
b) H1: µ1 = µ2 = µ3
c) H0: µ1? µ2? µ3
d) H1: µ1? µ2? µ36b. Which of the following is the alternative, or research, hypothesis? Highlight or circle your answer. [.5 points]
a) H0: X1 = X2 = X3
b) H1: X1 = X2 = X3
c) H0: X1? X2? X3
d) H1: X1? X2? X37. PASTE YOUR SPSS OUTPUT BELOW [3 total points]
– Include the tables labeled Descriptives, Test of Homogeneity of Variances, ANOVA, Multiple Comparisons, and Means Plots[PASTE OUTPUT HERE Tip: if you are having trouble cutting/pasting, try pasting as an image]
8. Interpret:
a. Did the SOC390 sections have significantly different exam scores, in general (yes or no)? What is our conclusion regarding the null hypothesis (reject or fail to reject the null)? [1 point]b. Which output table from above gives you the information to answer 8a (keep in mind I am only asking if the means differed in general)? Highlight or circle your answer. [.5 point]
a) Descriptives
b) Test of Homogeneity of Variances
c) ANOVA
d) Multiple Comparisons
e) Means Plots.c. Using the Multiple Comparisons table from your output above, answer the following and include the appropriate p-value for each (Sig.) to let me know you are not just guessing!
Did Miller and Field significantly differ? [.5 point]
Did Miller and Smith significantly differ? [.5 point]
Did Smith and Field significantly differ? [.5 point]
9. Write up the results from this analysis using APA format. Make sure you include each group mean (and SD) exam score, the correct F stat with the correct degrees of freedom and p-value, decision regarding the null, and the follow-up comparisons (if necessary). Use the example in the SPSS ANOVA lecture to help guide you. [3 points]
RESEARCH SCENARIO 3 [10 points]:
Our dataset includes exam scores from women and men (see variable: sex; 0 = female, 1 = male). We want to test whether or not men and women scored the same on the (made up) exam (variable: Exam_scores).10a. Which of the following is the null hypothesis?Highlight or circle your answer. [.5 points]
a) H0: µ1 = µ2
b) H1: µ1 = µ2
c) H0: µ1? µ2
d) H1: µ1? µ210b. Which of the following is the alternative, or research, hypothesis? Highlight or circle your answer. [.5 points]
a) H0: X1 = X2
b) H1: X1 = X2
c) H0: X1? X2
d) H1: X1? X211. Which test is needed to answer this question? Highlight or circle your answer. [.5 point]
a) one-sample t-test
b) one way ANOVA
c) independent samples t-test
d) dependent samples t-test12. Run the test in SPSS.
a. What was the t-statistic*? _________ [1 point]
*I did not anticipate Levenes test being significant on this variable. Go ahead and report the statistics for 12a-c using the Equal variances assumed line.
b. What were the confidence intervals? ________ [1 point]
c. What was the p-value? _______ [1 point]
d. PASTE YOUR SPSS OUTPUT HERE! [2 points]13. Based on your SPSS analysis, what is your decision regarding the null (reject or fail to reject)? [.5 point]
14. Write up your results in APA format. Your write-up should include sample mean(s)/standard deviation(s), t-statistics, degrees of freedom, p-value, and a conclusion. (use the examples from lecture). [3 points]
RESEARCH SCENARIO 4 [10 points]:
I asked students from SOC390 several questions about their feelings towards statistics. I am interested in how these variables are related to each other. Using the dataset provided, calculate the correlations between the following 5 variables:
like_stats,
anxious,
expect_well,
try_well,
dont_do_well.
For this question, analyze all of the correlations at once (you should get a correlation matrix for output). Be sure to also select Means and standard deviations when running your correlation analysis.15. Paste your output below. You should include the Descriptive Statistics table and the Correlations table. [4 points]
[PASTE OUTPUT HERE]
16. Looking at your correlation matrix above, tell me which two variables were the most STRONGLY correlated. Include the correlation, degrees of freedom, and the p-value (Sig.) for the pair you choose. [2 points]
17. What is the correlation between like_stats and anxious? Is it significant and in what direction? Write up your interpretation/conclusion using APA format. Be sure to include the correlation, degrees of freedom, and p-value [4 points]
RESEARCH SCENARIO 5 [10 points]:
In this section you will interpret output that is provided (you do NOT need to run anything for this scenario).I am interested in testing whether the section of SOC390 that a participant was in (Variable name = Class; 1= Miller, 2 = Field, 3= Smith) influences their exam scores (Variable name = exam_scores). I also think that gender might also influence exam scores (Variable name = Gender; 0 = female, 1 = male). To test this, I conducted a two-way ANOVA. There is a lot of output associated with a two-way ANOVA we are only going to focus on the output below.
18. What are the two factors in this example? How many levels are on each factor?
[2 points]19. What is the dependent variable? [2 points]
20. In the output above, there are two main effects and an interaction effect being tested. First: assuming ? = .05, what are the conclusions for these tests (significant or not significant)? Second: For each, provide the F statistic including degrees of freedom and p-value. [6 points]
Fclass(__, ___) = ______, p = _____? Significant or not significant? ______________
Fgender(__, ___) = ______, p = _____? Significant or not significant? ______________
FclassXgender(__, ___) = ______, p = _____? Significant or not significant? ______________
RUBRIC
Excellent Quality
95-100%
Introduction 45-41 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Literature Support
91-84 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Methodology
58-53 points
Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met.
Average Score
50-85%
40-38 points
More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided.
83-76 points
Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration.
52-49 points
Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met.
Poor Quality
0-45%
37-1 points
The background and/or significance are missing. No search history information is provided.
75-1 points
Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration.
48-1 points
There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met
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social statistics, sociology assignment help