Computer Science

Courses: STATISTICS FOR DECISION MAKING Question 1:  Find a graph or chart in the news and describe the information provided.  Was this graph the best choice for presenting the data?  Why or why not?  How might the graph mislead the reader, if at all? Please include a screen shot of the graph or chart. (Short Answer). Question2:  Describe the difference between bar charts, histograms, Pareto charts, including how they are structured and in what situations are each most effectively used? (Short Answer).

Requires SPSS to answer the research question. To prepare for this Discussion: Review this week’s Learning Resources and media program related to multiple regression. Create a research question using the Afrobarometer Dataset or the HS Long Survey Dataset, that can be answered by multiple regression. Use SPSS to answer the research question. Post your response to the following: If you are using the Afrobarometer Dataset, report the mean of Q1 (Age). If you are using the HS Long Survey Dataset, report the mean of X1Par1Edu. What is your research question? What is the null hypothesis for your question? What research design would align with this question? What dependent variable was used and how is it measured? What independent variables are used and how are they measured? What is the justification for including these predictor variables? If you found significance, what is the strength of the effect? Explain your results for a lay audience, explain what the answer to your research question. Required Readings Frankfort-Nachmias, C., Leon-Guerrero, A., & Davis, G. (2020). Social statistics for a diverse society (9th ed.). Thousand Oaks, CA: Sage Publications. Chapter 12, “Regression and Correlation” (pp. 401-457) (previously read in Week 8) Wagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social science statistics (7th ed.). Thousand Oaks, CA: Sage Publications. Chapter 11, “Editing Output” (previously read in Week 2, 3, 4, 5. 6, 7, and 8) Walden University Library. (n.d.). Course Guide and Assignment Help for RSCH 8210. Retrieved from http://academicguides.waldenu.edu/rsch8210 For help with this week’s research, see this Course Guide and related weekly assignment resources. Document: Walden University: Research Design Alignment Table

Hello I have 2 Q in Data mining please help me for that : Q1:                                                                           Alzheimer’s disease is a progressive disorder that causes brain cells to waste away (degenerate) and die. Alzheimer’s disease is the most common cause of dementia a continuous decline in thinking, behavioral and social skills that disrupts a person’s ability to function independently. The early signs of the disease may be forgetting recent events or conversations. As the disease progresses, a person with Alzheimer’s disease will develop severe memory impairment and lose the ability to carry out everyday tasks. Current Alzheimer’s disease medications may temporarily improve symptoms or slow the rate of decline. These treatments can sometimes help people with Alzheimer’s disease maximize function and maintain independence for a time. Different programs and services can help support people with Alzheimer’s disease and their caregivers. Refer to the following link to have a brief review for this disease: https://www.mayoclinic.org/diseases-conditions/alzheimers-disease/symptoms-causes/syc- 20350447   Tasks: –   Build the dataset that would be helped in classifying the level of Alzheimer’s disease. ·      Determine the number and the names of classes that would be used in your experiment (level of Alzheimer’s disease). ·      Determine the best attributes that effect diagnosing this disease. Assign the suitable type for these attributes, make scientific argument for each type  ·      Attach your file (CSV or arff, or Excel) after fill it with 30 records . ·      Perform exploratory data analysis to get a good feel for the data and prepare the data for data mining, supports your answer by add snapshots of the preprocessing part . ·      The task in this dataset is to make predictions of the degree of Alzheimer’s , Which is the suitable filter that supposed to use to select your attributes.  ·      Visualize your attributes. In ?Note: solving this question, there must be an excel file written in the attributes and sent with the solution ·      Smooth your data set using Bin size=3, with all possible methods. Are there any reasons to make this process?

Respond in your own words in this Discussion forum in 50-100 word responses to the following questions: 1) How do Agile project management approaches relate to traditional (PMI PMBOK) approaches? 2) What is Scrum and how does it relate to Agile methodologies? 3) What are the three main Scrum Roles (or Agile Roles) and how should they serve customer value (what is needed) over constraints (schedule, cost, etc.)? 4) Based on a quick “sweep” of the web (web search), identify and discuss one company or government agency actively using Agile PM (Hint: Search DoD or VA  AND Agile or Scrum for many government hits). Note: Content not coming directly from you will need to be cited per APA. FYI, best practice is to use citations to support your content and assertions. Note: Responses may be a single paragraph or multi-paragraph, but should be well-organized, thorough, and well-presented.

This is an individual assignment but you may brainstorm ideas with your team members to get ideas and other perspectives.One of the potential problems mentioned in the chapter with gathering information requirements by observing potential system users is that people may change their behavior when observed. What could you do to overcome this potential confounding factor in accurately determining information requirements?All of the methods of data collection discussed in this chapter take a lot of time. What are some ways analysts can still collect the information they need for systems analysis but also save time? What methods can you think of that would improve upon both traditional and newer techniques?Evaluation Criteria.Was the assignment properly formatted with proper spelling and grammar?Did the student demonstrate an understanding of the different techniques for gathering user requirements and their advantages/disadvantages?Did the student demonstrate critical thinking?Deliverables. Please name your files module4assignXXX.doc, (where XXX are your initials).The answer should be at least 3-4 paragraphs, double spaced.Type your answer in Word. Save your answer as a word document (naming it module4assignXXX.doc where XXX are your initials)

Write a 2 – 4 page paper on “A day in your life and influence of modern Knowledge Management tools”. What kind of a day you are experiencing with and without various automated/digitized tools and devices (i.e., gadgets, wearables, etc.,)?

As more companies outsource systems development, will there be less need for in-house systems analysts?  Why or why not?

The case study retail store is concerned about the possibilities of losing data because of database system malfunctions or downtime. Security is also a major concern to the company because it is common knowledge that engaging in online business can be risky because of known vulnerabilities on the Internet. The company also realizes that its in-store database system is the top priority at this time. What solutions can you propose to effectively manage database transactions, maintain security, and recover the data that are lost from system failure or downtime? Examples are provided here to help with this assignment. The assumptions are as follows: A high volume of the orders often occurs during the daytime. One person will serve the role of database administrator. The database administrator account will serve as database owner. The transaction log must be backed up. Point-in-time recovery is required. There is an always-on availability group. The ability to purchase products online will be addressed in a future database project. The project deliverables are as follows: What solutions can you propose to effectively manage database transactions, maintain security, and recover the data that are lost from system failure or downtime? What is your rationale for the transaction management plan, database security procedure, backup plan, and recovery model that you proposed for the case study organization? Database Administration Plan (4–5 pages) Create a database administration plan that is specific to the needs of your retail store. Include a transaction management plan that includes a flowchart for how each transaction will be handled (including rollback and commit cases). Include a database security procedure that includes provisions for access control, user authentication, and availability. Include a backup plan and a recovery model Provide your analysis as to how this part of the project fulfills the mission and 1 or more goals of the case study organization. All sources should be cited both in-text and in References using APA format.

What is quality? What is quality assurance, and why is it important in the context of a project?  Compare and contrast 3 of what you consider to be the most appropriate types of quality systems for the project of developing a new software program

Effective Communication Tactics   Leadership communication is important for all phases of an IT project. There are many tips, tricks, skills, and strategies for leaders to keep in mind when communicating with their team. Research effective communication skills for IT projects. Share one tip, trick, skill, or strategy and answer the following questions in a minimum of 200 words: ·       When would be an appropriate time to use this advice? Provide an example. ·       How would this advice be used company-wide or customer-facing? Does the advice change? If so, how? ·       What is one challenge of this advice? Cite your sources in APA format.  References:  Influence And Leadership In Tech   Textbook ·       Daft, R. L. (2018). The leadership experience (7th ed.). Cengage.