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Project summary · Tableau · parameter-driven design

Sales & Customer Performance Dashboard

Two linked Tableau dashboards over 9,994 retail transactions, driven by a shared year parameter so every year-over-year comparison re-points at once.

Role
Personal build
Stack
Tableau · parameter-driven design
Status
Live
Repository
glcapitan / tableau-sales-customer-dashboard
Live
Interactive dashboard on Tableau Public

Why I built it

Retail teams usually have the data and are missing the reporting layer — so the same questions get answered by hand every week from Excel exports. This dashboard replaces that loop with one parameter-driven source of truth.

Questions it answers

How I built it

  1. One parameter, two dashboards. A shared Select Year parameter links the Sales and Customer views, so every current-year versus prior-year comparison moves together.
  2. Profit concentration analysis. Products ranked by cumulative profit contribution rather than revenue, which is what exposes the margin destroyers.
  3. Discount tier analysis. Margin measured by discount band to find the point where discounting turns negative.
  4. Customer segmentation. Order frequency and profit-per-order by segment, to separate repeat buyers from the single-purchase tail.
  5. KPI threshold flagging. Targets built into the view so the dashboard reads as pass/fail rather than as raw numbers.
Sales dashboard
Sales dashboard
Customer dashboard
Customer dashboard

What it found

Honest notes

Built on a public retail transaction dataset covering 2020 to 2023. Figures above are from the dashboard default 2023 view.