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groupby

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Test Development Learning Exchange
Test Development Learning Exchange
Nov 18, 2024 · Fundamentals

Using Pandas groupby for Data Aggregation and Grouping

This tutorial teaches how to use the Pandas library's groupby method to group data by one or multiple columns and apply aggregation functions such as sum, mean, max, and min, with clear code examples and a practical exercise.

data aggregationdata analysisgroupby
0 likes · 4 min read
Using Pandas groupby for Data Aggregation and Grouping
Code Ape Tech Column
Code Ape Tech Column
Jul 6, 2024 · Big Data

Learning Spark Operations with Java Stream Concepts: Map, FlatMap, GroupBy, Reduce Examples

This article demonstrates how Java Stream operations such as map, flatMap, groupBy, and reduce can be directly applied to Spark, providing step‑by‑step code examples, explanations of transformation versus action operators, and practical tips for handling exceptions in distributed data processing.

Big DataFlatMapJava Stream
0 likes · 25 min read
Learning Spark Operations with Java Stream Concepts: Map, FlatMap, GroupBy, Reduce Examples
Code Ape Tech Column
Code Ape Tech Column
Jun 21, 2023 · Big Data

From Java Streams to Spark: Basic Big Data Operations Explained

This article demonstrates how developers familiar with Java Stream APIs can quickly grasp fundamental Spark operations—including map, flatMap, groupBy, and reduce—by translating stream examples into Spark code, providing complete code snippets, explanations of transformations versus actions, and practical tips for handling exceptions in distributed processing.

Big DataFlatMapJava Stream
0 likes · 24 min read
From Java Streams to Spark: Basic Big Data Operations Explained
Python Programming Learning Circle
Python Programming Learning Circle
Oct 10, 2022 · Fundamentals

Using Python pandas to Replicate Excel Functions: VLOOKUP, Data I/O, Pivot Tables, and Plotting

This article demonstrates how to replace Excel's common data‑analysis tasks—such as VLOOKUP, data import/export, pivot tables, and charting—by using Python's pandas library together with Plotly for visualization, providing code examples and performance tips for each scenario.

ExcelPivot TableVLOOKUP
0 likes · 15 min read
Using Python pandas to Replicate Excel Functions: VLOOKUP, Data I/O, Pivot Tables, and Plotting
Python Programming Learning Circle
Python Programming Learning Circle
May 7, 2022 · Fundamentals

Using pandas iterrows() and groupby() for DataFrame Row Iteration and Aggregation

This article explains how to iterate over DataFrame rows with pandas iterrows(), demonstrates grouping data using pandas groupby() with examples of splitting, aggregation, transformation, and filtration, and provides complete code snippets for each operation.

Aggregationdata analysisdataframe
0 likes · 7 min read
Using pandas iterrows() and groupby() for DataFrame Row Iteration and Aggregation
Python Programming Learning Circle
Python Programming Learning Circle
Apr 29, 2022 · Fundamentals

Pandas Tips Summary: 13 Practical Techniques for Efficient Data Analysis

This article compiles thirteen concise pandas techniques—including missing‑value calculation, group‑by max row extraction, multi‑column aggregation, string filtering, memory optimization, and more—to help Python users perform data analysis more efficiently and effectively.

Pythondata analysisdataframe
0 likes · 9 min read
Pandas Tips Summary: 13 Practical Techniques for Efficient Data Analysis
Python Programming Learning Circle
Python Programming Learning Circle
Apr 24, 2020 · Fundamentals

Using pandas to Convert Excel Birthdates to Age and Perform Grouped Statistics

This tutorial demonstrates how to read an Excel file with pandas, convert an 8‑digit birthdate column to datetime, calculate age, and then use groupby to produce aggregated statistics by age and gender, including combined summaries for all students and females only.

ExcelPythonage-calculation
0 likes · 4 min read
Using pandas to Convert Excel Birthdates to Age and Perform Grouped Statistics