interpolation

magell

New Member
Joined
May 13, 2002
Messages
8
I have a series of x and corresponding y values and need to find the values in between. An example:

X - values Y-values
1 34
2 31
5 29
9 25
15 18
17 17
18 13
22 8
25 2
26 1

How do I find an interpolated y-value for each x (1, 2, 3, 4, 5, 6, 7, etc)?
 

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Mark W.

MrExcel MVP
Joined
Feb 10, 2002
Messages
11,654
Here are the first 15 rows...
This message was edited by Mark W. on 2002-09-11 07:39
 

magell

New Member
Joined
May 13, 2002
Messages
8
Thank you! It works except for one thing; my x and y values are not linearly correlated, making the forecasted y-values not following the trend... For each x where I don't have a y-value, I would need to make an interpolation between the closest known y-values... have the feeling it's not such a big problem, but so far I haven't had any success..
 

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