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Business Data Analysis Part 1 - Python and Descriptive Statistics

"From environment setup to practical business projects, a data science journey to find revenue answers through data (39 lectures in total)." Go beyond simply learning how to use libraries and learn how to cook real-world e-commerce data through the data science process. Starting from development environment setup and Numpy/Pandas basics to data preprocessing, statistical analysis, visualization, and business scenario-based RFM segmentation and hypothesis testing! Systematically master the core competencies of a data scientist through practical projects.

1 learners are taking this course

Level Basic

Course period Unlimited

Python
Python
Data Engineering
Data Engineering
Numpy
Numpy
Pandas
Pandas
Matplotlib
Matplotlib
Python
Python
Data Engineering
Data Engineering
Numpy
Numpy
Pandas
Pandas
Matplotlib
Matplotlib

What you will gain after the course

  • * Ability to build an optimal environment for Python and essential libraries for data analysis

  • * Large-scale business data handling and cleaning techniques using Numpy and Pandas

  • * RFM segmentation and statistical analysis capabilities for business metric analysis

  • * Professional-level data visualization and reporting skills using Matplotlib and Seaborn

  • * Problem-solving know-how for deriving business insights from data through hypothesis testing and correlation analysis

Course Introduction


Data science has now moved beyond being a simple skill to becoming the core of business decision-making. However, many learners mistakenly believe they know everything about data analysis after only practicing how to use libraries or working through a few simple visualization examples.

This course guides you into "real-world business practice." By refining unpolished raw data yourself, considering feature engineering, classifying customer behavior patterns through RFM models, and deriving the core causes of sales performance through statistical hypothesis testing, you will grow beyond being a simple developer into a data-driven decision-maker. After completing this sophisticated 39-lecture journey, you will gain the strong confidence to logically analyze any business data you are given.

: "From environment setup to practical business projects, a data science journey to find revenue answers through data (Total 39 lectures)"

Beyond simply learning how to use libraries, you will learn how to cook data handled in actual e-commerce fields using the data science process. From setting up the development environment and Numpy/Pandas basics to data preprocessing, statistical analysis, visualization, and even RFM segmentation and hypothesis testing based on business scenarios!

Systematically master the core competencies of a data scientist through practical, hands-on projects.

 

Key points of this course

* Business-focused practical analysis: Go beyond basic syntax to directly solve core issues in the e-commerce industry, such as sales analysis, customer segmentation, and business diagnosis.

* Solid Data Science Foundation: From setting up the development environment, which is the start of any analysis, to mastering Numpy and Pandas—the essential tools for practical data handling—from basics to advanced levels.

* Systematic Analysis Process: Go beyond simple numerical calculations and master professional analysis frameworks—from data preprocessing to statistical hypothesis testing and correlation analysis—through hands-on practice.

* Mastering Practical Data Preprocessing: From handling missing values and outliers to feature engineering, you will acquire the skills to refine raw industry data into an analyzable format.

* Business Insight Reporting: Elaborately visualize analysis results, identify causal relationships within the data, and derive final insight reports that can be utilized for actual decision-making.

 


📱 Curriculum & Project Preview


✒ Section 1. Starting Data Analysis and Setting Up the Environment (Lecture 1 ~ Lecture 3)

Before diving into full-scale analysis, you will understand the workflow of data science and perfectly set up the Python development environment and essential libraries for efficient data handling.

Key Learning: Course roadmap, analysis environment setup, installation and verification of essential libraries


✒Section 2. The Foundation of Data Analysis, Numpy (Lectures 4 ~ 10)

Learn the structure and manipulation methods of Numpy arrays, which serve as the foundation for all data operations. Acquire file I/O techniques and linear algebra applications for high-speed processing of numerical data.

Core Skills: Array creation and basic manipulation, indexing/slicing, linear algebra, and random number generation

 

✒ Section 3. Understanding Pandas Data Structures (Lectures 11 ~ 14)

Fully understand the Series structure of Pandas, the core tool for structured data analysis. Build a solid foundation starting from the most basic unit used by data scientists to handle data.

Core Skills: Overview of Pandas, step-by-step understanding of Series, and data access methods


✒ Section 4. Data Frame Handling Master (Lectures 15 ~ 19)

You will experience the entire process of handling DataFrames, which are data in tabular form. You will learn to control data freely, from identifying data types to performing indexing and slicing under complex conditions.

Key Learning: Identifying data types, basic DataFrame manipulation, advanced indexing and slicing strategies


✒ Section 5. Data Cleaning and Descriptive Statistics (Lectures 20 - 25)

Refine raw, unprocessed data into an analyzable state. Learn how to handle missing values and outliers, and derive data characteristics through group-based statistical analysis.

Key Skills: Data preprocessing process, group statistical analysis, missing values and outliers

Processing logic


✒ Section 6. Data Visualization and Exploratory Analysis (Lectures 26 - 30)

Visually derive hidden patterns and meanings within the data. Implement professional, report-quality charts and plots using Matplotlib and Seaborn.

Core Technologies: Matplotlib & Seaborn visualization techniques, Pandas-integrated visualization utilization


✒Section 7. [Project] Business Scenarios and Data Cleaning (Lectures 31 ~ 34)

We begin the project based on a scenario that reflects the real-world concerns of the e-commerce industry. You will learn the entire process, from initial data exploration to professional-level feature engineering.

Key Learning: Business Scenario Setting, Data Cleaning Pipeline, Feature Engineering Application


✒Section 8.[Project] Sales Analysis and Business Insights (Lectures 35 ~ 39)

Diagnose sales performance through data and classify customers. Complete the final insight report required for actual decision-making through RFM analysis and hypothesis testing.

Key Learning: RFM segmentation, correlation analysis, hypothesis testing, and final reporting methodology


✒ Introduction to the Knowledge Sharer

Jaeseong Yoon (Lead Data Analysis Instructor at LIKE LION)


Development Experience
• Launched SKT "Island Adventure" mobile content development
• Launched KT "Quiz Soccer" mobile content development
• Launched SK "Mobile Real Estate Agent"
• Developed iPhone "Hanja-tong" app
• Developed iPhone "Health Training" app
• Developed KT/SK Japan Namco "Tales of Commons" content
• Developed KT mini-games (Yageum Yageum Land Grab, Aladdin's Magic Lamp, Mystery Block Detective Agency, BUZZ and BUZZ)

Teaching Experience
A veteran instructor with 19 years of experience in teaching and development for current employees of famous domestic companies and job seekers, including Samsung Multi Campus, Busan IT Industry Promotion Agency, Jeonju IT & Cultural Industry Promotion Agency, Incheon IT Industry Promotion Agency, Korea Radio Promotion Association, SK C&C, T Academy, Korea Institute for Robot Industry Advancement, Daejeon ETRI, Samsung Electronics, nica Education Center, Korea Productivity Center, Hanwha S&C, LG Electronics, and more.

Teaching Fields
Teaches in fields such as Java, Android, Frameworks, Databases, UML, iPhone, Big Data processing and analysis, Python, IoT, data analysis using R/Python, Deep Learning, Machine Learning AI, and Spark. The courses are structured to explain concepts as easily as possible by incorporating diverse experiences, and to create examples that can be applied to practical exercises. Since this is not an offline class, please use the Q&A for anything you don't understand.

Recommended for
these people

Who is this course right for?

  • * For those who want to learn quickly through hands-on projects: Those who want to experience the analysis process of finding revenue solutions by handling actual business data, rather than sitting through tedious lists of grammar.

  • * Those who want to master the entire process of data analysis: Those who want to experience the full-stack process of data science, going beyond simple visualization to data cleaning, feature engineering, and statistical hypothesis testing.

  • * Those who are curious about business data analysis methodologies: Those who want to directly implement core techniques used immediately in real-world decision-making, such as RFM segmentation, correlation analysis, and hypothesis testing.

  • * Job seekers or career changers who need a high-quality portfolio: Those who want to secure data analysis and insight report results based on actual business scenarios rather than simple examples.

Need to know before starting?

  • You must be familiar with basic Python syntax.

  • Since this course covers Numpy and Pandas—the core tools of data analysis—step-by-step from basics to advanced levels, even beginners with no prior analysis experience can easily follow along as long as they have a basic understanding of Python coding.

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41 lectures ∙ (15hr 54min)

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