Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
R for Data Science

You're reading from   R for Data Science Learn and explore the fundamentals of data science with R

Arrow left icon
Product type Paperback
Published in Dec 2014
Publisher
ISBN-13 9781784390860
Length 364 pages
Edition 1st Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Dan Toomey Dan Toomey
Author Profile Icon Dan Toomey
Dan Toomey
Arrow right icon
View More author details
Toc

Questions

Factual

  • How can you decide whether to use Pearson, Kendall, or Spearman as a method for correlation?
  • When would you want to see a small degree of freedom in the correlation results?
  • Most of the examples used common default parameters. Explore the same examples with nondefault parameters.

When, how, and why?

  • Why do the polychoric functions take so long to process?
  • Why are the values chosen in the polychoric responses correlated?
  • Explain the threshold values that were calculated.

Challenges

  • Is there an easier way to develop the 2 x 2 matrix needed as input to the tetrachoric function?
  • How could you account for trends in investment vehicles when analyzing stock market returns versus fixed instruments?
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image