tacticaldataprep Download

4 upvotes
Visit on GitHub
Preview Quiz.md
  1. How many books from our dataset have 5 or less pages?

    • [ ] 174
    • [ ] 157
    • [ ] 147
    • [ ] 13,557
  2. How many books have an average rating of 0 having been reviewed at least once? In other words, ignore the books that have not received any reviews yet and consider only books that have been reviewed. How many of these books have an average rating of 0?

    • [ ] 1
    • [ ] 4
    • [ ] 5
    • [ ] 0

For Quiz 3, refer to the code chunk below:

{r eval=FALSE} x <- c(0,4,2) y <- x y <- c(y, -3)

  1. Referring to the code chunk, what is the value of x?

    • [ ] A vector of 0, 4 and 2
    • [ ] A vector of 0, 4, 2 and -3
    • [ ] A vector of -3, 0, 4 and 2
  2. Read the dataset books_c.csv in and replace all variants of English (eng, en-US, en-GB, any other possible en-__ variants) with eng in the language_code variable. How many books in the database are in English irrespective of its variants?

    • [ ] 13714
    • [ ] 12634
    • [ ] 12643
    • [ ] 12646
  3. What is a good example of a Diagnostic Question?

    • [ ] "Does English books receive more ratings than books in other languages in general?"
    • [ ] "Are there any books with a non-numeric ISBN value?"
    • [ ] "What are the best-performing authors based on their reviews?"
Quiz
You need to score 4 out of a possible 5 to earn a badge.
You have 2 attempts. Only your highest score will be taken into account.
  • Quiz 1

    How many books from our dataset have 5 or less pages?

    Question worth 1 point

  • Quiz 2

    How many books have an average rating of 0 having been reviewed at least once? In other words, ignore the books that have not received any reviews yet and consider only books that have been reviewed. How many of these books have an average rating of 0?

    Question worth 1 point

  • Quiz 3

    Referring to the code chunk, what is the value of x?

    Question worth 1 point

  • Quiz 4

    Read the dataset books_c.csv in and replace all variants of English (eng, en-US, en-GB, any other possible en-__ variants) with eng in the language_code variable. How many books in the database are in English irrespective of its variants?

    Question worth 1 point

  • Quiz 5

    What is a good example of a Diagnostic Question?

    Question worth 1 point

Recipients 15