Exam (elaborations)
WPC (questions with complete solutions) A+ graded
- Course
- Institution
WPC (questions with complete solutions) A+ graded
[Show more]
Content preview
WPC (questions with completesolutions) A+ graded
Multicollinearity occurs when - correct answer ✔✔two independent variables in the regression model
are highly correlated
What would be an example of a null hypothesis when you are testing correlations between random
variables x and y? - correct answer ✔✔there is no significant correlation between the variables x and y
A regression analysis is used to determine the - correct answer ✔✔degree of association between
variables
In a regression model, outliers may be identified by examining the - correct answer ✔✔residuals
Which of the following statements is true for an experimental study? - correct answer ✔✔A proper
design of the experiment is required to study a certain effect of the intervention
In a linear regression model, the dependent variable is "Final exam score (%) for WPC 300" and the
independent variable is "Hours studied". A coefficient of 4 could be interpreted as for every - correct
answer ✔✔hour of additional study, the expected final exam score increases by 4%.
Which of the following questions are unsuitable for A/B testing? - correct answer ✔✔which feature
should I launch next?
For a given problem, if you determined that you need to predict the outcome to make a decision and
also anticipate the behavioral change of the subject, what kind of big guns analysis would you perform? -
correct answer ✔✔Game theory model and simulation
You are using 100 college students to find out how hours of revision affect their performance in a
college-level Spanish language exam. Which of the following variables could be a confounding variable
for your study? - correct answer ✔✔what language is spoken at home by these students
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
