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databricks · Certified-Associate-Developer-for-Apache-Spark · Q428 · multiple_choice · topic_1

The code block shown below contains an error. The code block is intended to return a collection of summary statistics f…

The code block shown below contains an error. The code block is intended to return a collection of summary statistics for column sqft in Data Frame storesDF. Identify the error. Code block: storesDF.describes(col(“sgft”))
  • A.The column sqft should be subsetted from DataFrame storesDF prior to computing summary statistics on it alone.
  • B.The describe() operation does not accept a Column object as an argument outside of a sequence — the sequence Seq(col(“sqft”)) should be specified instead.
  • C.The describe()operation doesn’t compute summary statistics for a single column — the summary() operation should be used instead.
  • D.The describe()operation doesn't compute summary statistics for numeric columns — the summary() operation should be used instead.
  • E.The describe()operation does not accept a Column object as an argument — the column name string “sqft” should be specified instead.
Explanation
Selected Answer: E E is the right choice.

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