Apache Spark 3 for Data Engineering and Analytics with Python - Aggregations with Grouping
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in grouping data before applying an aggregation function?
Creating a new DataFrame
Selecting specific columns
Creating a heading
Filtering the data
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which function is used to perform a count aggregation on grouped data?
sum()
count()
max()
min()
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you order the results of a count aggregation?
By using the filter function
By using the orderBy function
By using the groupBy function
By using the select function
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using the agg function in the context of this tutorial?
To filter data
To perform multiple aggregations
To create a new DataFrame
To group data by multiple columns
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When grouping data by origin state and city, which state is used as a filter in the example?
New York
California
Texas
Florida
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which aggregation functions are demonstrated in the final section of the tutorial?
max, avg, count
min, avg, sum
max, min, sum, count
sum, avg, count
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the error corrected in the final section of the tutorial?
Missing a round bracket
Incorrect column name
Wrong function used
Missing a semicolon
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