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Exam Certified Associate Developer for Apache Spark All Questions

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Exam Certified Associate Developer for Apache Spark topic 1 question 102 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 102
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

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.
Show Suggested Answer Hide Answer
Suggested Answer: E 🗳️
by Sowwy1 at April 2, 2024, 1:22 p.m.

Comments

Chosen Answer:
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SaiPavan10
7 months, 3 weeks ago
Selected Answer: E
E is the right choice.
upvoted 2 times
...
Sowwy1
7 months, 4 weeks ago
I think it's E. It should be storesDF.describe("sqft")
upvoted 2 times
...

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