Dr. John McDonald Case Study - Management Assignment Help

Assignment Task:

DSC 424 Assignment #4Dr. John McDonald 
Note: For each of the analysis problems, include a copy of the full analysis in your report along with your conclusions. You should include all relevant output and code snippets from R, but you should make your answers and analysis based on each part of the R output clear and easy to read. Analyze each part carefully and explain your analysis in full sentences. Do not simply include the output from R with no explanation. 
1) (20 points) Paper Review: An academic paper from a conference or Journal will be posted to the Homework 2 content section of D2L. It contains a usage of Correspondence Analysis. Review the paper and evaluate their usage of the technique. In particular, address in detail the following points. You should be able to fill at least a page with your review and analysis, and each point should be answered in a complete paragraph with several sentences. If you claim something about the paper, you should be able to back it up with a quote or evidence from the paper. 
a)  How suitable is their data for CA? Is their overall use of the technique appropriate? If not, explain why, and if so, explain what they hope to discover and how CA can help. ?
b)  How are they applying CA? What variables are being analyzed and what types of categorical levels do they contain? 
c)  How did they use graphs from the CA in their analysis? 
d)  Did they use any techniques to evaluate goodness of fit? If not, was it appropriate that ?they did not? How would it have helped their exposition if they had? If they did, wheat ?were the results? 
e)  What conclusions does CA allow them to draw? How impactful are those conclusions? ?Are there any practical, actionable implications from their conclusions? ?
f)  Are there any issues that you can identify in their analysis? Do they make any ?assumptions that seem unwarranted? Have they mis-applied any techniques or statistical tests that we’ve gone over in class (note, you do not have to dive deep here, just see if on the surface that assumptions are being met and statistical tests properly applied). ?
2) (20 points) The file “Survey.csv” contains survey responses to a questionnaire about Wikepedia pages. Each question’s responses are on a 5 point likert scale. Perform an ordinal Principal Factor Analysis (exploratory) on this data addressing the following points. The questions are 
QU1: Articles in Wikipedia are reliable

QU2: Articles in Wikipedia are updated

QU3: Articles in Wikipedia are comprehensive

QU4: In my area of expertise, Wikipedia has a lower quality than other educational resources

QU5: I trust in the editing system of Wikipedia

VIS1: Wikipedia improves visibility of students’ work

VIS2: It is easy to have a record of the contributions made in Wikipedia?VIS3: I cite Wikipedia in my academic papers IM1: The use of Wikipedia is well considered among colleagues

IM2: In academia, sharing open educational resources is appreciated

IM3: My colleagues use Wikipedia 
a)  Compute the correlation matrix in three ways, first with the pearson correlation, second with the spearman rank correlation, third with the Kendall tau correlation, and visualize all three with the corrplot function. How do the correlation matrices differ. 

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