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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 76 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 76
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

The code block shown below should return a new DataFrame with the mean of column sqft from DataFrame storesDF in column sqftMean. Choose the response that correctly fills in the numbered blanks within the code block to complete this task.

Code block:

storesDF.__1__(__2__(__3__).alias("sqftMean"))

  • A. 1. agg
    2. mean
    3. col("sqft")
  • B. 1. withColumn
    2. mean
    3. col("sqft")
  • C. 1. agg
    2. average
    3. col("sqft")
  • D. 1. mean
    2. col
    3. "sqft"
  • E. 1. agg
    2. mean
    3. "sqft"
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Suggested Answer: A 🗳️
by cookiemonster42 at July 31, 2023, 10:20 p.m.

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cookiemonster42
1 year, 3 months ago
Selected Answer: A
A is the right one
upvoted 1 times
...

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