Cohort Analysis: How to Measure Customer Retention and Make Better Decisions
Cohort analysis groups customers by when they started (for example, the month of their first purchase or sign-up) and tracks how each group behaves…
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Time Series Forecasting in Python: A Practical Guide to ARIMA and Prophet
Time series forecasting in Python means using past observations, recorded at regular intervals, to predict future values with a quantified range of uncertainty. The…
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RFM Analysis Explained: How to Segment Customers by Recency, Frequency and Monetary Value
By Pius Imwene, Data Analyst and Data Science Consultant at Data Science Consulting Pro | Last updated: October 2026 Here is RFM analysis explained…
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Unsupervised Machine Learning: Algorithms, Examples, Techniques and Business Applications
Unsupervised machine learning is a branch of machine learning that finds structure in data that has no predefined labels or target outcomes. Instead of…
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What Is Data Observability? Benefits, Pillars, Metrics, and Examples
A company’s executive sales dashboard opens normally at 8:00 AM. The charts load, the database is online, and the pipeline reports a successful run.…
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Data Lake vs Data Warehouse vs Lakehouse: Which Is Right for Your Business?
A mid-sized company has dashboards built on top of warehouse tables, years of raw customer logs sitting untouched in object storage, a new machine…
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How to Create a Dashboard in Tableau: Step-by-Step Guide
By Pius Imwene, Data Analyst and Analytics Consultant at DataScienceConsultingPro.com. Published 22 August 2026. Most people arrive at Tableau with a folder of spreadsheets…
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Classification and Regression Tree (CART): A Practical Guide
A bank approving loans, a telecom flagging churn risk, a hospital predicting readmissions: none of these can ship a prediction alone. Someone has to…
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Data Mesh vs Data Fabric
Data Mesh vs Data Fabric: Differences, Costs & Uses Reviewed and updated: July 2026 Most organizations don’t struggle to store data anymore. They struggle…
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ETL vs ELT: How to Pick the Right Data Pipeline (and Avoid the Mistake Most Teams Make)
By Pius Imwene · Data Engineering · Updated July 2026 · 14 min read Your sales dashboard says $1.2 million in revenue. Accounting says…
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