Reputation: 63201
As shown in the screenshot: both axes are numeric. So why can not the trend line be calculated?
Upvotes: 0
Views: 3172
Reputation: 1967
The problem with this set up is that the values on the x-axis are discrete values rather than a measure. Tableau treats every number as a separate category rather than a point on an axis. If you click on that field and chose "Convert to measure", you should get an actual scatterplot and you should then be able to add a reference line for each axis.
Upvotes: 4