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LinkedIn R Skill Assessment

LinkedIn  R Exam Type: LinkedIn Test Answers
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Last Updated: November 2021

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LinkedIn R Exam Answers 2021

  Linkedin R assessment questions

Which choice does R regard as an acceptable name for a variable?

  • Var_A!
  • Var2_A
  • _VarA
  • .2Var_A

Linkedin R skill assessment answers

What is the principal difference between an array and a matrix?

  • A matrix can have columns of different lengths, but an array's columns must all be the same length.
  • A matrix has two dimensions, while an array can have three or more dimensions.
  • An array is a subtype of the data frame, while a matrix is a separate type entirely.
  • A matrix may contain numeric values only, while an array can mix different types of values.

Linkedin R skill assessment

Which is not a property of lists and vectors?

  • Length 
  • Attribute
  • Scalar
  • type

Linkedin R assessment answers

In the image below, the data frame on lines 1 through 4 is named StDf. State and Capital are both factors. Which statement returns the results shown on lines 6 and 7?

  • StDf[1:2,]
  • StDf[1,2,]
  • StDf[1:2,1]
  • StDf[1:2,-3]

Linkedin R assessment Quiz answers

Which function displays the first five rows of the data frame named pizza?

  • first(pizza,5)
  • BOF(pizza,5)
  • top(pizza,5)
  • head(pizza,5)

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