regression to the mean - EUR/GBP - but what is the mean?

regression to the mean - EUR/GBP - but what is the mean?

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johnfm

Original Poster:

13,668 posts

258 months

Monday 20th April 2009
quotequote all
So, from 2004 to 2007, GBP/EUR was circa 1.45

Dropped to 1.25 from July 07 to April 08

Dropepd further to the virtual 1:1 headline grabbing rates.

It is now heading back.

I am a firm believer in regression to the mean - but what is the 'mean' for a relatively new currency pair?

1.45?

or 1.25?

Clearly, there are underlying economic factors for UK and Eurozone - but the current values are historic extremes which, I expect, will regress.

Just thought I'd open the floor to debate.

limpsfield

6,198 posts

261 months

Thursday 23rd April 2009
quotequote all
I would ask - why should it regress to the mean and, even if it will, it could still get well above the mean in the mean time...

I am looking at a chart that goes back to 1979 - presumably made up of some basket of Deutsche Marks, Francs etc before the Euro.

Low point in 1981 just above .5, high point prior to this year was in 95 and around .85.

Edited to add those numbers above are EUR/GBP not GBP/EUR




Edited by limpsfield on Thursday 23 April 18:36

johnfm

Original Poster:

13,668 posts

258 months

Friday 24th April 2009
quotequote all
limpsfield said:
I would ask - why should it regress to the mean and, even if it will, it could still get well above the mean in the mean time...

I am looking at a chart that goes back to 1979 - presumably made up of some basket of Deutsche Marks, Francs etc before the Euro.

Low point in 1981 just above .5, high point prior to this year was in 95 and around .85.

Edited to add those numbers above are EUR/GBP not GBP/EUR




Edited by limpsfield on Thursday 23 April 18:36
Hurrah.. a response...there is somebody on this forum!!

It will regress to the mean, because that's what all cylical time series do.

ianash

3,284 posts

191 months

Friday 24th April 2009
quotequote all
The Daily Telegraph is saying the Euro is overvalued against Sterling by 15%.

limpsfield

6,198 posts

261 months

Friday 24th April 2009
quotequote all
johnfm said:
limpsfield said:
I would ask - why should it regress to the mean and, even if it will, it could still get well above the mean in the mean time...

I am looking at a chart that goes back to 1979 - presumably made up of some basket of Deutsche Marks, Francs etc before the Euro.

Low point in 1981 just above .5, high point prior to this year was in 95 and around .85.

Edited to add those numbers above are EUR/GBP not GBP/EUR




Edited by limpsfield on Thursday 23 April 18:36
Hurrah.. a response...there is somebody on this forum!!

It will regress to the mean, because that's what all cylical time series do.
Who says its a cyclical time series?