Data Analyst | Excel β’ SQL β’ Power BI β’ Python β’ Business Analytics | 10 years ops experience | Lagos π³π¬ #jumoke_data
Joined December 2025
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20 weeks. 5 tools. 3 portfolio projects.
Self-taught, self-directed, done.ππ
Excel. SQL. Power BI. Python. Business Analytics.
The learning-in-public arc is officially closed.
On to the next chapter.
#jumoke_data #DataAnalytics #LearningInPublic #DataAnalyst
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19 weeks in.
3 portfolio projects. All live on GitHub. π
US Sales.
Brazilian E-Commerce.
Marketing Funnel.
Excel. SQL. Power BI. Python.
The portfolio is real.
#jumoke_data #DataAnalytics #GitHub
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Week 18
Portfolio Project 3β
Olist had 8,000 seller leads. Only 842 converted.
The channel with the LEAST leads? Highest conversion rate (16.29%).
Volume is not quality.
Full breakdown: Python | SQL | Power BI
GitHub: link in bio
#jumoke_data #DataAnalytics #PowerBI #Python
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Week 17
Portfolio Project 2: done. π
3 days planned. 7 days actual.
Excel SQL Power BI SCR presentation -- 8 Olist datasets.
Headline number looks great. Delivery data tells a different story.
P3 is next. Python joins the stack.
#jumoke_data #DataAnalytics #PowerBI
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Week 16 done! P1 Power BI dashboard complete.
Excel felt fast. SQL felt fast. Power BI humbled me. Past 3am sessions, formatting battles, figuring things out alone.
Worth it.
17,992 rows. 5 DAX measures. 4 insight-based charts.
Still building. #jumoke_data #PowerBI
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Day 5 β
Week 15.
Wrote my first business case todayπ³
Secret? A business case is just SCR with numbers.
Situation Complication Resolution = a recommendation any decision-maker can act on.
Portfolio Week starts TODAYππ₯
#DataAnalytics #LearningInPublic #CareerTransition
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Day 4, Week 15 β
Biggest lesson today:
Your chart title should state the insight β not describe the chart.
β "Monthly Sales 2024"
β
"Sales Have Declined Every Month Since January"
One shift. Completely different impact.
#DataAnalytics #LearningInPublic #jumoke_data
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Day 3 of Week 15 and A/B Testing just taught me something I did not expect:
A better result is not automatically a better decision.
You still need to ask; Is the result real? Is the sample big enough?
Does the difference actually matter?
#jumoke_data #abtesting #dataanalytics
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Week 15, Day 2: Funnels & Cohortsπ₯
Sales funnels show you WHERE customers drop off.
Cohort analysis shows you WHETHER you're getting better at keeping them.
two very different questions. two very different tools, both essential.
#jumoke_data #DataAnalytics
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Rate tells you the problem.
Volume tells you the cost.
The most important thing I learned today as a data analyst in training.
#jumoke_data #LearningInPublic
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Week 15 just started and the topic is Business Analytics.
Day 1 β KPIs and Frameworks.
Let me break down what I learned π§΅
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My biggest takeaway β a good analyst does not just report numbers.
They also flag what the data CANNOT tell you.
That is the part that impresses stakeholders.
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Week 15 Day 1 done.
Four more days to go this week.
#jumoke_data #businessanalytics #dataanalytics #learninginpublic
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Three frameworks to help you pick the right KPIs: SMART Goals β make your target clear before picking a metric.
Balanced Scorecard β track finance, customers, processes AND growth .
North Star Metric β one number that captures your core business value.
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My biggest takeaway β a good analyst does not just report numbers. They also flag what the data CANNOT tell you.
That is the part that impresses stakeholders.
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Week 14 done! π
First full EDA notebook in Python. Loaded data, found anomalies, wrote business insights and pushed it all to GitHub.
14 weeks in. Self-taught. No cap. π©πΎβπ»π
github.com/jumoke-data/pythoβ¦
#jumoke_data #DataAnalytics #Python #LearningInPublic #WomenInData
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Day 4 of Week 14 and I just learned that data without context is just noise π
Insight writing = Observation Why So what
Not beans at all but I got it done! π·
#DataAnalytics #LearningInPublic #jumoke_data
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