Difference/Spread Between Two Line Graphs when Data does not Align.

emoandy05

Board Regular
Joined
Sep 4, 2013
Messages
60
Hello!

I have a set of data similar to the following plotted as two line graphs, one for Bills, one for Coups. As any point between the two lines, I would like to find the difference. The problem is, the data points do not line up, so I can't simply take Coups minus Bills. Is there a way to extrapolate the differences based on the line?

Thank you!


Maturity
Bills
Coups
2/4/20160.1521
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/20160.1983
2/12/2016
2/13/2016
2/14/2016
2/15/2016 0.0156
2/16/2016
2/17/2016
2/18/20160.2135
2/19/2016
2/20/2016
2/21/2016
2/22/2016
2/23/2016
2/24/2016
2/25/20160.1932
2/26/2016
2/27/2016
2/28/2016
2/29/2016 0.1951
3/1/2016
3/2/2016
3/3/20160.2746
3/4/2016
3/5/2016
3/6/2016
3/7/2016
3/8/2016
3/9/2016
3/10/20160.1678
3/11/2016
3/12/2016
3/13/2016
3/14/2016
3/15/2016 0.2705
3/16/2016
3/17/20160.2237
3/18/2016

<colgroup><col><col span="2"></colgroup><tbody>
</tbody>

I
 

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I've added trend lines for Coups and Bills, based on Moving Average. Is there a way to find the difference between trend lines?
 
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