OPXSKILLS PRACTICE INPUT — SYNTHETIC DATA

Task: February 2026 sales review
Audience: Operations lead at the fictional company Harbor Desk
Period: January and February 2026

Use monthly-sales.xlsx, or the identical monthly-sales.csv, as the only numeric source.
Currency: USD. Revenue excludes tax. There are no refunds, discounts, or currency conversions in this exercise.
Each row is a monthly product total. There are three products per month and six rows in total.

Definitions:
- Gross profit = revenue_usd - cost_usd.
- Gross margin = gross profit / revenue_usd.
- Month-over-month growth = (February value - January value) / January value.
- Describe a difference between two margins in percentage points.

Deliverables:
1. sales-summary.xlsx, with Raw data and Summary sheets. Preserve the input rows. Use formulas for all derived metrics and recalculate them.
2. monthly-report.docx, an editable one-page report with a two-month comparison table, three factual observations and one proposed follow-up.

Use observations supported by the data. The data does not explain the causes of change.
Mark any recommended action as a proposal. Do not invent a forecast, customer story, or business explanation.
Open or render the DOCX and check its layout. State which checks actually ran.

Provenance: Original fictional practice material created for OpxSkills. These are inputs for an exercise, not results of an AI run.