Help!!! How do I add trendline to scatter plot

[DatNguyenUHN]

Hi!

Both the X and Y axis of my scatter plot are composed of numerical data; however, I can't add trendline.

Please help!

Thank you in advance!

[DatNguyenUHN]

Hi Vicky,

Whenever I added a variable to determine the size of the bubble, the trendline dissappeared. 

Sorry for not elaborate sooner.

Thank you so much!

[vicky_]

Can you see the option to add the trend line here?