Re: Proof 2=1

Posted by Mike on Dec 11, 2018; 6:29pm
URL: http://spssx-discussion.165.s1.nabble.com/Proof-2-1-tp5737153p5737154.html

This is a somewhat old chestnut, so let me provide a novel conundrum.

Consider:

A person reports the result of a correlational analysis and only reports

the valuw od r^2.  There are no scaterplots, no raw data, nthing except

the "effect size" measure r^2.

Question:  What is the value of the Pearson r?

A better question is "how values of Pearson r are there and how do you

choose which one to use if no additional info is provided?" ;-)

-Mike Palij

New York University

[hidden email]

P.S.  I'm getting well again.

On Tue, Dec 11, 2018 at 11:54 AM Martin Holt <[hidden email]> wrote:

 Xmas draws nearer!

For  young statisticians...some festive fun

Proof that  2 = 1

a = b

a² = a.b

a² + a² = a.b + a²

2a² = a.b + a²

2a² – 2ab = a.b + a² – 2ab

2a² – 2ab = a² – a.b

2(a² – a.b) = a² – a.b

Dividing through by (a² – a.b) gives 2=1

Q.E.D.

Martin P. Holt

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===================== To manage your subscription to SPSSX-L, send a message to [hidden email] (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD