8.5 Combo Chart with a Secondary Axis
When two measures have very different scales (sales in ₹ lakh vs order count in thousands), use a combo chart.
Steps in Excel
- Select Month, Pune and Orders (Pune) columns (Ctrl-select non-adjacent columns).
- Insert › Charts › Insert Combo Chart › Create Custom Combo Chart…
- Pune → Clustered Column; Orders (Pune) → Line with Markers and tick Secondary Axis › OK.
- Add axis titles: + › Axis Titles › "Sales (₹ lakh)" and "Orders".
- Match colours: the line colour = its axis label colour to help reading.
Worked example. Pune sales (columns) and orders (line): in November both peak, but the AOV (sales ÷ orders) is also higher – Diwali baskets are bigger.
Ravindra Bagale's Tip
Secondary axis lavlyavar konti series kontya axis var aahe he khup students la kalat nahi, aani manager chukicha arth kadhto. Donhi axes la titles dya aani rang match kara. Teen-char measures ekach combo madhe ghusdu naka – don purese.
Practice task
Create a combo of Nagpur sales (columns) and Nagpur average delivery minutes (line, secondary axis) for six months, with axis titles.