ISYE 6414 FINAL EXAM / ISYE6414 FINAL EXAM REAL EXAM QUESTION AND ANSWERS
8 views 0 purchase
Course
ISYE 6414 FINAL EXAM 2022-2023 / ISYE6414 FINAL E
Institution
ISYE 6414 FINAL EXAM 2022-2023 / ISYE6414 FINAL E
ISYE 6414 FINAL EXAM / ISYE6414 FINAL
EXAM REAL EXAM QUESTION AND ANSWERS
ISYE 6414 FINAL EXAM / ISYE6414 FINAL
EXAM REAL EXAM QUESTION AND ANSWERS
ISYE 6414 FINAL EXAM / ISYE6414 FINAL
EXAM REAL EXAM QUESTION AND ANSWERS
ISYE 6414 FINAL EXAM 2022-2023 / ISYE6414 FINAL
EXAM REAL EXAM QUESTION AND ANSWERS
1. We should always use mean squared error to determine the best value
of lambda in lasso regression.
a. True
b. False
Sol: False. The criterion used is a choice we make.
2. Standard linear regression is an example of a generalized linear model
where the response is normally distributed and the link is the identity
function.
a. True
b. False
Sol: True. See Unit 4.4.1.
3. Goodness-of-fit assessment for logistic regression involves checking
for the independence, constant variance, and normality of the deviance
residuals.
a. True
b. False
Sol: False. We don’t have constant variance in binomial regression.
4. You are interested in understanding the relationship between stress level and
exercise, with stress as the response. In your model, the number of hours a
person spends exercising per week would be considered an explanatory
variable while the person’s age would be a controlling variable.
a. True
b. False
Sol: True. Time spent exercising is part of the relationship you are trying to
understand while age could act as a confounding variable that you need to
control.
5. The hypothesis test for goodness-of-fit using Pearson residuals and the
test using deviance residuals will always reach the same conclusion.
a. True
b. False
Sol: False. One test may conclude plausibly good fit while the other rejects it.
, 6. A logistic regression model with high goodness of fit can have low predictive
power.
a. True
b. False
Sol: True. See Unit 4.2.3.
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 Profsmith. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $22.84. You're not tied to anything after your purchase.
