We can assess the constant variance assumption in linear regression by plotting the
residuals vs. fitted values. - Answer️️ -True
If one confidence interval in the pairwise comparison in ANOVA includes zero, we
conclude that the two corresponding means are plausibly equal. - Answer️️ -Tr...
If a predicting variable is a categorical variable with 5 categories in a linear regression
model without intercept, we will include 5 dummy variables. - Answer✔️✔️-True
If the normality assumption does not hold for a regression, we may use a transformation
on the response variable. - Answer✔️✔️-True
The prediction of the response variable has higher uncertainty than the estimation of the
mean response. - Answer✔️✔️-True
Statistical inference for linear regression under normality relies on large sample size. -
Answer✔️✔️-False (Explanation: small sample size is fine)
A nonlinear relationship between the response variable and a predicting variable cannot
be modeled using regression. - Answer✔️✔️-False (Explanation: Nonlinear relationships
can often be modeled using linear regression by including polynomial terms of the
predicting variable, for example.)
Assumption of normality in linear regression is required for confidence intervals,
prediction intervals, and hypothesis testing. - Answer✔️✔️-True
Page 1 of 9
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 SophiaBennett. 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.
