Tag: Engineering

• 7-2 Discussion: Interpreting Multiple Regression ModelsDiscussion Topic
  
  Starts Jun 12, 2021 8:59 PM

  In this discussion, you will apply the statistical concepts and techniques covered in this week’s reading about multiple regression. You will not be completing work in Jupyter Notebook this week. Instead, you will be interpreting output from your Python scripts for the Module Six discussion. If you did not complete the Module Six discussion, please complete that before working on this assignment.Last week’s discussion involved development of a multiple regression model that used miles per gallon as a response variable. Weight and horsepower were predictor variables. You performed an overall F-test to evaluate the significance of your model. This week, you will evaluate the significance of individual predictors. You will use output of Python script from Module Six to perform individual t-tests for each predictor variable. Specifically, you will look at Step 5 of the Python script to answer all questions in the discussion this week.In your initial post, address the following items:

  1. Is at least one of the two variables (weight and horsepower) significant in the model? Run the overall F-test and provide your interpretation at 5% level of significance. See Step 5 in the Python script. Include the following in your analysis:
     1. Define the null and alternative hypothesis in mathematical terms and in words.
     2. Report the level of significance.
     3. Include the test statistic and the P-value. (Hint: F-Statistic and Prob (F-Statistic) in the output).
     4. Provide your conclusion and interpretation of the test. Should the null hypothesis be rejected? Why or why not?
  2. What is the slope coefficient for the weight variable? Is this coefficient significant at 5% level of significance (alpha=0.05)? (Hint: Check the P-value, , for weight in Python output. Recall that this is the individual t-test for the beta parameter.) See Step 5 in the Python script.
  3. What is the slope coefficient for the horsepower variable? Is this coefficient significant at 5% level of significance (alpha=0.05)? (Hint: Check the P-value, , for horsepower in Python output. Recall that this is the individual t-test for the beta parameter.) See Step 5 in the Python script.
  4. What is the purpose of performing individual t-tests after carrying out the overall F-test? What are the differences in the interpretation of the two tests?
  5. What is the coefficient of determination of your multiple regression model from Module Six? Provide appropriate interpretation of this statistic.

  In your follow-up posts to other students, review your peers’ results and provide some analysis and interpretation:

  1. Interpret your peer’s coefficient of determination. How does it compare with yours?
  2. How do the results of your peers’ t-tests compare with yours?
  3. Would you recommend this regression model to the car rental company? Why or why not?

  Remember to attach your Python output and respond to all questions in your initial and follow-up posts. Be sure to clearly communicate your ideas using appropriate terminology.

Read the problem descriptions from the file attached. All data are available in the Excel file

• Paste all MINITAB screen shots onto your report with their conclusions
• Attached Minitab files with the data.

For the I-MR chart, the Minitab support-webpages might be useful as below:

https://support.minitab.com/en-us/minitab/18/help-and-how-to/quality-and-process-improvement/control-charts/how-to/variables-charts-for-individuals/i-mr-chart/before-you-start/overview/

http://blog.minitab.com/blog/understanding-statistics/how-create-and-read-an-i-mr-control-chart

I’m stuck on a Data Engineering question and need an explanation.

Which aspects of the dashboard assembly mode in Cognos Analytics were most user friendly? Which were the least user friendly?

I need an explanation for this Information Technology question to help me study.

• Name the basic constructs of an ensemble model. What are the advantages and disadvantages of ensemble models?
• List and briefly describe the nine-step process in conducting a neural network project.
• What is the main difference between classification and clustering? Explain using concrete examples.
• What are the privacy issues with data mining? Do you think they are substantiated?

to help out in writing literature review about Optimization preparation of one-dimensional polypyrrole nanotubes for enhanced thermoelectric performance for master thesis

You will have to read the article and summarize it. I will need 3 pages. This table lists criteria and criteria group names in the first column. The first row lists level names and includes scores if the rubric uses a numeric scoring method. You can give feedback on each criterion by tabbing to the add feedback buttons in the table. Reaction Section Level 4

1.75 points

Level 3

1 point

Level 2

0.5 points

Level 1

0 points

Criterion Score

Score of Implications & Applications,/ 1.75Criterion score has been overridden

done

3 days ago

Jkennish

Okay, now kindly take picture of the rubric. The copy pasted text doesnt make it so clear

3 days ago

And by the way, in future you can exclusively invite me to work on all of your questions

3 days ago

Or a screenshot of the rubric

3 days ago

View attached explanation and answer. Let me know if you have any questions.

ATTACHMENTS

leadership.docx

Please write the final training report and presentation in powerpoint briefly based on the attached files.

follow all requirments in the attached file. 3000 words

FYI, I will share some points i writing before

I’m working on a engineering question and need support to help me learn.

answer the questions :9.8, 9.9, 9.10, 9.14

from the book (Mechatronics and Measurement Systems, ALCIATORE David G and HISTAND Michael B, McGraw Hill, 4th edition (2011))and make sure to show all steps. PS: answers could be found in chegg.

There will be about 20 questions and I won’t be able to attach all the questions because you have to finish question 1 and then I will be able to see question 2. I only need final answers. I will attach question 1 for you.