Do Not Refresh Declining Content Until You Diagnose the Loss
Do Not Refresh Declining Content Until You Diagnose the Loss A page loses clicks. The instinctive response is to update the introduction, add a few…
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Your AI-built app works in the demo. But did the signup event actually reach GA4?
You vibe-coded a landing page with a lead form over a weekend. The demo works: you submit, you see the success toast, you move on. Two weeks later y…
8 Analytics Mistakes That Quietly Lead Teams to the Wrong Decision
It's Monday's leadership review. The dashboard says average order value is up 12% month over month. Everyone nods, the marketing team gets a pat on…
Backtest a betting idea before you trust it
Originally published at quantplus.win . Sports betting backtesting software runs a betting rule over past games using only the prices and informatio…
Before You Change an App Listing, Write a Measurement Contract
A store listing test is easier to interpret when the team decides what success means before changing the creative. Here is a small measurement contr…
Hash the email. Do not hash the IP. Both mistakes still return 200.
A Purchase reaches the Meta Conversions API with a 64-character hex string in every user_data field. Test Events shows the event. Match quality on t…
Floodlight still needs src, type, and cat. A leftover ord=1 counts once.
People still search for DART Floodlight tags. DART was DoubleClick's ad server. Campaign Manager 360 still serves the same activity on doubleclick.n…
Pixel Helper cannot see a Conversions API POST. A 200 is not the contract.
A checkout worker posts a Purchase to the Meta Conversions API. The response is HTTP 200. Test Events stays empty. The next move is usually a new ac…
Pixel Helper said the tag fired. Chrome Network never requested facebook.com/tr.
GTM preview said the Meta tag fired. Pixel Helper painted a green PageView. Events Manager is empty, and the ticket says the Facebook pixel is not f…
From Raw Data to Business Decisions: Cleaning and Modeling JCars Logistics Sales Data in Power BI
The Brief JCars Logistics imports and sells vehicles across Kenya. I was handed a raw, deliberately messy 276-row sales dataset and asked to turn it…
A Case for JCars Logistics Business
Introduction Building a dashboard is only one part of a successful Business Intelligence (BI) project. Before a visual can provide meaningful insigh…
A Complete Guide to A/B Testing for Data Analysts
A/B testing sounds simple: show half your users version A, the other half version B, and pick the winner. In practice, it’s one of the easiest place…
Fathom Analytics vs Umami: Which Fits Your Website?
Fathom Analytics and Umami both make a credible case for privacy-conscious website measurement. The decision for a small website team is whether to…
Why GA4 DebugView is not showing events and how to fix it
Google Analytics™ 4 DebugView is the built-in tool to inspect events as they arrive. When events do not show up, the issue can be in the browser, in…
Root Cause Analysis Charts: How to Find Why a Metric Dropped
Root cause analysis leans on a different set of charts than reporting does. Seven do most of the work, and each one answers a single diagnostic ques…
Your LLM Telemetry Table Does Not Have One Denominator
Originally published on hexisteme notes . I had an LLM telemetry report with the usual reassuring furniture: medians, interquartile ranges, sample s…
Power BI: Data Modelling, Relationships and Joins
Introduction When I first approached a health dataset in Power BI, I was more interested in the dashboard than the structure behind it. I wanted to…
500 programmatic pages, 15 days live — here are all the numbers, including the 6 clicks
The one-line version Fifteen days ago we put 500 programmatic pages live for a real client. As I write this, the site has earned 6 clicks and 89 imp…
Building an Interactive Excel Dashboard for E- Commerce Product Analysis."A case study of Jumia Products."
Project Introduction and Objective After two weeks of intensive learning at LuxDev HQ, where I was introduced to different concepts, tools, and prac…
How AI-Powered Data Analytics Works: From Raw Data to Intelligent Insights in 2026
The Shift From Traditional Analytics to AI-Powered Analytics For decades, businesses have relied on a fairly predictable process to make sense of th…
5 Habits That Keep a dbt Project From Turning Into a Mess
I once inherited a dbt project where the same "active customer" filter existed in four different models, each written slightly differently. Two of t…
Jumia Product Analysis with Excel
Introduction When shopping onine, I usually find myself looking at two things before making a purchase: Product ratings and reviews since I cannot e…
The hardest label in our dataset is the one where nothing happened
Four times a year, a public company gets on a call with analysts and says what it intends to do next. A margin it expects to reach. A plant it expec…
CHOps SQL Editor: A Complete Guide to Faster ClickHouse® Query Development and Optimization
What is CHOps? CHOps is a browser-based operations platform built for managing ClickHouse® deployments. Instead of relying entirely on the command l…
We Analyzed 1 Million AI Voice Calls in India. Here’s What We Learned
AI voice agents are moving from demos into real business workflows. But what actually makes an AI phone call successful? To find out, DialNexa analy…
Building a Modern Data Lakehouse on AWS: S3, Iceberg, Glue, Athena, and Lake Formation
The data lakehouse has become the default architecture for analytics on AWS in 2026. It combines the best of both worlds: the low-cost, schema-flexi…
Node.js Product Analytics-Style API: 3 Metrics Dashboard Rollback Drills
A product analytics style metrics dashboard page says a nightly media pipeline produced 18,420 searchable articles when 18,487 were eligible. The No…
Why Statistics Is the Backbone of Data Science
Statistics isn't a supporting subject in data science, it's the thing that makes the "science" part of data science actually mean something. Code Gi…
A Segment Track Call Needs an Event Name. The HTTP 200 Does Not Check.
A server posts a track to api.segment.io/v1/batch . The response is 200. Downstream destinations never see the event. Segment's HTTP API is a collec…
PostHog Capture Treats an Epoch Timestamp as Ingestion Time
You backfill six months of user signed up events into PostHog through the capture API. The request returns 200. Insights show a spike today, not a c…