100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
(LU) CSIS 657 - Statistical Analysis & Data Mining - Complete Midterm Review $13.49   Add to cart

Exam (elaborations)

(LU) CSIS 657 - Statistical Analysis & Data Mining - Complete Midterm Review

 2 views  0 purchase

(LU) CSIS 657 - Statistical Analysis & Data Mining - Complete Midterm Review (LU) CSIS 657 - Statistical Analysis & Data Mining - Complete Midterm Review

Preview 3 out of 18  pages

  • September 6, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Unknown
All documents for this subject (7)
avatar-seller
ClementeO
CSIS 657



Statistical Analysis & Data Mining




COMPLETE MIDTERM REVIEW




© 2024/2025

,1. Multiple Choice: Which of the following is a key assumption of
linear regression analysis?
a) Homoscedasticity
b) Heteroscedasticity
c) Multicollinearity
d) Autocorrelation
Correct Answer: a) Homoscedasticity


2. Fill-in-the-Blank: In a dataset, the presence of ________ can
significantly affect the performance of a data mining algorithm.
Correct Answer: outliers


3. True/False: Principal Component Analysis (PCA) is a supervised
learning technique.
Correct Answer: False


4. Multiple Response: Which of the following are benefits of using
a decision tree for data analysis? (Select all that apply)
a) Easy to interpret and explain
b) Requires little data preprocessing
© 2024/2025

, c) Non-parametric method
d) Invariant to feature scaling
Correct Answers: a) Easy to interpret and explain, b) Requires
little data preprocessing, c) Non-parametric method


5. Multiple Choice: In the context of data mining, 'support' refers
to:
a) The number of times a rule is found to be true
b) The probability of finding a certain pattern in the dataset
c) The reliability of inferred rules
d) The inverse of the error rate
Correct Answer: b) The probability of finding a certain pattern
in the dataset


6. Fill-in-the-Blank: ________ is a measure of the strength of
association between two variables.
Correct Answer: Correlation


7. True/False: Overfitting refers to a model that captures the noise
of the data rather than the underlying pattern.
Correct Answer: True


© 2024/2025

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 ClementeO. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $13.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

77858 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$13.49
  • (0)
  Add to cart