- Open your worksheet that contains a scatter or line chart.
- Go to the 'Analysis' menu at the top, select 'Trend Lines', then click 'Show All Trend Lines'.
- A trendline will automatically appear on your chart.
How to Add a Trendline in Tableau
Walk through this interactive demo to learn how to add a trendline in Tableau.
📌 Why this matters
Adding trendlines transforms raw data points into actionable insights by revealing the mathematical relationship between your variables. You can quickly identify whether correlations are strong or weak, positive or negative, and make data-driven predictions about future performance. Beyond the visual clarity, trendlines provide the statistical foundation for forecasting and help you communicate findings to stakeholders who need concrete evidence of patterns. When presenting to executives or clients, that single line becomes proof of causation rather than just scattered observations.
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