A researcher is interested in the effect on test scores of computer usage. using school district​ data, she regresses district average test scores on the number of computers per student. what are po

A researcher is interested in the effect on test scores of computer usage. using school district​ data, she regresses district average test scores on the number of computers per student. what are possible sources of bias for modifyingabove beta 1 with caretβ1​, the estimated effect on tests scores of increasing the number of computers per​ student? for each source of bias​ below, determine whether modifyingabove beta 1 with caretβ1 will be biased up or down. 1. average income per capita in the district. if this variable is​ omitted, it will likely produce​ a(an) ▼ upward downward bias of the estimated effect on tests scores of increasing the number of computers per student. 2. the availability of computerized adaptive learning tools in the district. if this variable is​ omitted, it will likely produce​ a(an) ▼ upward downward bias of the estimated effect on tests scores of increasing the number of computers per student. 3. the availability of​ computer-related leisure activities in the district. if this variable is​ omitted, it will likely produce​ a(an) ▼ upward downward bias of the estimated effect on tests scores of increasing the number of computers per student.

Show more

Calculate Your Essay Price
(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)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more