statisticstableau-apitrendline
Why are there Three Trend Lines in Tableau
In Tableau when I go to Analysis > Trend Lines > Show Trend Lines, why does it show 3 trend lines?
What does this mean?
Or can you tell me to google to figure this out? I'm stumped ???
Solution
The lines above and below are confidence bands: http://onlinehelp.tableau.com/current/pro/desktop/en-us/trendlines_add.html
Tableau confidence bands show upper and lower 95% confidence lines by default when you add trend lines.
You can turn them off by clicking "Show Confidence Bands" in the dialog.
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