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DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #111
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Question #111: Real Exam Question with Answer & Explanation
The correct answer is B: storesDF.sample(fraction = 0.15). See the full explanation below for the reasoning.
Performing Data Transformations using Spark DataFrames
Question
Which of the following code blocks returns a 15 percent sample of rows from DataFrame storesDF without replacement?
Options
- AstoresDF.sample(True, fraction = 0.15)
- BstoresDF.sample(fraction = 0.15)
- CstoresDF.sampleBy(fraction = 0.15)
- DstoresDF.sample(fraction = 0.10)
- EstoresDF.sample()
Topics
#Spark DataFrame#Sampling#PySpark API#Data Transformation
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