BJ The Analyst

Welcome, I am BJ.

I publish data analysis tutorials using Excel, SQL, Python, and Power BI. The focus is practical work: data cleaning, modeling, visualization, dashboards, and real-world projects. The goal is to show clear methods that you can use in your own analysis.

How to Build Pivot Table and Pivot Chart in Excel

How to Build Pivot Table and Pivot Chart in Excel
Contoso Sales Analysis in PostgreSQL | Real Business Insights Using SQL in VS Code

Contoso Sales Analysis in PostgreSQL | Real Business Insights Using SQL in VS Code
RFM Analysis in Python | Customer Segmentation Tutorial for Data Analytics

RFM Analysis in Python | Customer Segmentation Tutorial for Data Analytics
Cohort Analysis in Python: Retention, Cohort Month, Activity Month (Pandas, Matplotlib, And Seaborn)

Cohort Analysis in Python: Retention, Cohort Month, Activity Month (Pandas, Matplotlib, And Seaborn)
HR Analytics Dashboard/Report Using Power BI And Dax.

HR Analytics Dashboard/Report Using Power BI And Dax.

Personal Finance Tracker Dashboard in Excel (Power Query, Power Pivot, DAX)

Personal Finance Tracker Dashboard in Excel (Power Query, Power Pivot, DAX)