All posts by : chebby

(1). EDITORIAL EXTRACTION

Select any visualisation/infographic and looking at any individual chart included. Try to extract and write down in language terms what this chart shows across the angle, the framing, and (where relevant) the focus?

Does it feel that the definition you have arrived at is consistent with the aims/claims of the chart as it is published? In other words does the chart show and include what you think it is actually supposed to be doing or is there a disconnect?

Assignment Link: http://book.visualisingdata.com/chapter/chapter5

Do the exercises below.

questions based on chapter 2 exercises:

(1) based on exercise 22

A) Describe how to map values from the interval [-1,1] to the interval [0,1].  

B) Consider two time series as two sets on numbers: e.g. S1 = {3, 5, 7, 8 , .., 4, 7} and S2 = {5, 5, 8 , .., 9, 7}. You need to come up with 2 sets, each having 100 elements. You can make them random if you like.

1) Normalize each set in range [0,1].

2) Find the probabilities of S2 in the ranges [0,0.1], (0.1,0.2], (0.2,0.3], .., (0.9,1] when S1 are in the same ranges [0,0.1], (0.1,0.2], (0.2,0.3], .., (0.9,1] respectively,  (find probability of value of S2 in the range, given the value of S1 is in the same range).

questions based on chapter 4 exercises:

(2) based on exercise 12

Let X be a binomial random variable with mean N * p and variance N * p * (1−p).

A) Show that the ratio X/N also has a binomial distribution

B) Show that the ratio X/N also has mean p

C) Show that the ratio X/N also has variance p * (1 − p) / N

questions based on chapter 5 exercises:

(3) based on exercise 6 

A) Suppose the fraction of undergraduate students who smoke is 15% and the fraction of graduate students who smoke is 23%. If one-fifth of the college students are graduate students and the rest are undergraduates, what is the probability that a student who smokes is a graduate student?

B) Given the information in part (a), is a randomly chosen college student more likely to be a graduate or undergraduate student?

C) Repeat part (b) assuming that the student is a smoker.

D) Suppose 30% of the graduate students live in a dorm but only l0% of the undergraduate students live in a dorm. If a student smokes and lives in the dorm, is he or she more likely to be a graduate or undergraduate student? You can assume independence between students who live in a dorm and those who smoke.

Instructions:

Create a FLOWCHART and a PSEUDOCODE for each problem.

Use the information below to create a pseudocode (which can be a text-based description for solving the problems) and a flowchart (using flowchart symbols to illustrate how you would program) to solve each problem. You may use Microsoft Word® for your pseudocode and Microsoft PowerPoint® for your flowchart.

1. Problem:

Create a flowchart and pseudo code to do the following:-

You are going to modify week 4 assignment (2 problems) to use input() function (no hard coded values) to prompt the user to enter the values.

Make sure the prompt message is meaningful, do not say “Enter value”, say something like this “Enter hours worked” after you get all the inputs, display the results and prompt the user if wants more calculation (y/n). If no then print a message like “Thank you for …….”

The flowchart must include a loop and if-then

Attached file

Part 1

A principal wants to determine if a new ACT preparation program is effective. The data are contained in the schools.sav data file. Open the schools.sav file in SPSS. Use SPSS to determine whether a significant improvement existed between student performance on ACT tests in 1993 (act93) and ACT tests in 1994 (act94). Assume that the same students were involved in 1993 and 1994 testing. (This requires a t-test. Review Chapter 10 of the Green & Salkind text for information on paired t-tests and reporting APA results interpretation and writing.)

Create a report that answers the principal’s question. Write these conclusions in formal APA results format. Include your SPSS output to support your conclusion.

Part 2

A pharmaceutical company wants to determine whether there is a need for a new medication based on the data in the electric.sav file. Specifically, they want to determine whether a person is alive or dead 10 years after a coronary incident and whether that is reflected in a significant difference in the patients’ cholesterol levels (chol58) taken when the event occurred. Use chol58 as a dependent variable and VITAL10 as your independent variable. Complete the following:

• Analyze these conditions to determine whether there is a significant difference between the cholesterol levels (vital10) of those who are alive 10 years later compared to those who died within 10 years.
• Include the SPSS output, which validates your conclusion.
• Write a brief paragraph describing your conclusions.

Refer to Unit 6 in the Green & Salkind text for specific information about SPSS tests and APA results interpretation and writing. Pay attention to the Levene’s test throughout for determining whether the assumption of equal variance was met when you make your final decisions about the analysis.

What conclusion did you reach? Write these conclusions in formal APA results format. Include your SPSS output to support that conclusion.

Part 3

Occasionally, you have 1 independent variable that has 3 or more levels or groups. For a parametric data set, an analysis of variance (ANOVA) is the proper calculation. Use an ANOVA to address the following scenario:

A financial planner is interested in understanding the relationship between the dependent variable of the income level of respondents (rincdol) and the independent variable of their education level (ndegree) from the gss.sav data file. Use SPSS to complete the following:

• Run an ANOVA to determine the overall conclusion.
• Use the Bonferroni correction as a post-hoc analysis to determine the relationship of specific levels of degree level to income.
• Explain the overall conclusions based on the analysis, and describe the relationship(s) between the levels of the degree earned and income.
• Write your conclusion of the findings based upon the output using proper APA formatting.

Submit both the SPSS output file and your Word summary. (Refer to the Green & Salkind section about a one-way ANOVA for information on APA results interpretation and writing.)

This week’s journal article focus on the how positive team culture can correct the impact of lagging leadership creativity.  Additionally, we discussed how digital transformation leaders in regard to artificial intelligence (AI).  After reviewing the reading, please answer the following questions:

1. What is your definition of AI?  Please explain.
2. What is your opinion of AI, is the technology currently available? Why or why not?
3. Please note at least four AI technologies, explain if they are truly AI or something else.  Thoroughly explain your answer.
4. How is AI perceived as different in various industries and locations? Please explain.

Please be sure that journal articles are peer-reviewed and are published within the last five years.

The paper should meet the following requirements:

• 3-5 pages in length (not including title page or references)
• APA guidelines must be followed.  The paper must include a cover page, an introduction, a body with fully developed content, and a conclusion.
• A minimum of five peer-reviewed journal articles.

The writing should be clear and concise.  Headings should be used to transition thoughts.  Don’t forget that the grade also includes the quality of writing.

Security Breach Evaluation

Learning Objectives and Outcomes

• Analyze the given case study on security breach.
• Recommend controls to avoid an enterprise security breach.

Assignment Requirements

Read the text sheet named “Local Breach of Sensitive Online Data” and address the following:

Using what you have learned about security breaches, describe what measures should have been taken by the educational service and test preparation provider to avoid the security breach mentioned in the text sheet.

check attachment

Directions

Part I: Complete Your Original Response to the Main Topic

The requirement of this activity for this module is for every student to solve one programming problem from the book, and post the source code in the discussion board for further analysis and discussion. In order to have more diversity of problems from the chapter, each student will select a problem number using the process described below.

Selecting the Problem Number to Use

Consider the following rules in calculating the problem number to solve:

• Divide your student ID by 20, consider the remainder and increment it by 1. The result you obtain represents the number of the programming exercise you will solve for this online discussion.

Posting the Solution

Once you determine the problem number, complete the solution to that problem. When you are satisfied with your solution, click the Reply link below to post in this discussion forum.

• In the first line of your post, your should add the chapter number, problem number, and page number of your problem.
• Your posting must include the source code along with explanations of how you have solved the problem.  

Choose one of the following alternative techniques, summarize it and provide examples of how your selected technique is used, and how you would apply it. Minimum page count for this assignment is two (2). Make sure that this assignment is in APA format.   

Artificial neural networks
Deep learning
Support vector machines
Ensemble methods