Design three to seven screenshots and supporting text that allow you to demonstrate the following to your friend

Your friend is taking an introductory statistics course and is now learning about linear regression. They are having a difficult time understanding how scatterplots, line-of-best-fit, Pearson’s r, residuals, squared residuals, outliers and R-squared relate to each other. Your friend says they are a “visual learner” and gets confused by all the calculations and R code. They think if only they could understand the big picture, maybe they would understand what each calculation and R command does.

While thinking of how to help your friend, you stumble across this website:
(link: https://phet.colorado.edu/sims/html/least-squares-regression/latest/least-squares-regression_en.html ). This URL leads to a web application that allows you to create and calculate a scatterplot, a line-of-best-fit, residuals, squared residuals and Pearson’s r. It also shows you the regression equation. Best of all, this application operates in real time and lets you create custom scatterplots.

Prompt

Design three to seven screenshots and supporting text that allow you to demonstrate the following to your friend:

  1. How the line of best-fit changes as new observations are added or removed.
  2. How outliers can impact the strength and direction of Pearson’s r.
  3. How Pearson’s r changes as new observations are added or removed.
  4. How the residuals (AKA error terms or deviations) change as new observations are added or removed.
  5. How better fitting lines produce smaller squared residuals.
  6. How better fitting lines produce higher values of Pearson’s r.
  7. How Pearson’s r (and R-squared, a measure of goodness-of-fit) is independent of the slope of the line.

Remember to provide sufficient explanatory text — but not too much — as you do this. Use a roughly linear pattern in your scatterplot and trim your screenshots of extraneous material.

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Benefits of our college essay writing service

  • 80+ disciplines

    Buy an essay in any subject you find difficult—we’ll have a specialist in it ready

  • 4-hour deadlines

    Ask for help with your most urgent short tasks—we can complete them in 4 hours!

  • Free revision

    Get your paper revised for free if it doesn’t meet your instructions.

  • 24/7 support

    Contact us anytime if you need help with your essay

  • Custom formatting

    APA, MLA, Chicago—we can use any formatting style you need.

  • Plagiarism check

    Get a paper that’s fully original and checked for plagiarism

What the numbers say?

  • 527
    writers active
  • 9.5 out of 10
    current average quality score
  • 98.40%
    of orders delivered on time
error: