Proof 2=1

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Proof 2=1

Martin Holt-3
 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
===================== 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
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Re: Proof 2=1

Mathew Chandler-2

But you are dividing by zero which is a no no when you divided by (a2 – a.b) since a = b

 

 

Mathew Chandler
Computing Consultant-BSS
I.T. Services
University of Windsor
Windsor, Ontario, Canada
N9B 3P4
(519) 253-3000 ext. 2768
[hidden email]

 

"Beware of false knowledge;

it is more dangerous than ignorance."

George Bernard Shaw
 

 

From: SPSSX(r) Discussion [[hidden email]] On Behalf Of Martin Holt
Sent: December 11, 2018 11:54 AM
To: [hidden email]
Subject: Proof 2=1

 

 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

===================== 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

===================== 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
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Re: Proof 2=1

Mike
In reply to this post by Martin Holt-3
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

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
===================== 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
===================== 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
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Re: Proof 2=1

Martin Holt-3
In reply to this post by Mathew Chandler-2
Spot on, Mathew!

Martin P. Holt
 
Freelance Medical Statistician

If you can't explain it simply, you don't understand it well enough.....Einstein


Concise
Encyclopedia
of Biostatistics for
Medical Professionals 

Martin P. Holt

Linked In: 
https://www.linkedin.com/in/martin-holt-3b800b48?trk=nav_responsive_tab_profile



From: Mathew Chandler <[hidden email]>
To: [hidden email]
Sent: Tuesday, 11 December 2018, 22:23
Subject: Re: Proof 2=1

But you are dividing by zero which is a no no when you divided by (a2 – a.b) since a = b
 
 
Mathew Chandler
Computing Consultant-BSS
I.T. Services
University of Windsor
Windsor, Ontario, Canada
N9B 3P4
(519) 253-3000 ext. 2768
[hidden email]
 
"Beware of false knowledge;
it is more dangerous than ignorance."
George Bernard Shaw
 
 
From: SPSSX(r) Discussion [[hidden email]] On Behalf Of Martin Holt
Sent: December 11, 2018 11:54 AM
To: [hidden email]
Subject: Proof 2=1
 
 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
===================== 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
===================== 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


===================== 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
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Re: Proof 2=1

Bruce Weaver
Administrator
In reply to this post by Mike
Q1. How many possible values of Pearson r are there?  
A1. Two, one negative and one positive.

Q2. How do you choose which one to use if no additional info is provided?
A2. I have no idea what you're fishing for here, Mike, but here's one
possible approach:  Report the positive square root of r^2 and describe it
as the correlation between y and y-hat (which is always non-negative, even
if the correlation between x and y is negative).  

Okay, now maybe you can tell us what you're really looking for!  ;-)  



Mike wrote

> 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

> mp26@

>
> P.S.  I'm getting well again.
>
>
> On Tue, Dec 11, 2018 at 11:54 AM Martin Holt <

> 000002126fbb7baa-dmarc-request@.uga

>> 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
>> ===================== To manage your subscription to SPSSX-L, send a
>> message to

> LISTSERV@.UGA

>  (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
>
> =====================
> To manage your subscription to SPSSX-L, send a message to

> LISTSERV@.UGA

>  (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





-----
--
Bruce Weaver
[hidden email]
http://sites.google.com/a/lakeheadu.ca/bweaver/

"When all else fails, RTFM."

NOTE: My Hotmail account is not monitored regularly.
To send me an e-mail, please use the address shown above.

--
Sent from: http://spssx-discussion.1045642.n5.nabble.com/

=====================
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
--
Bruce Weaver
bweaver@lakeheadu.ca
http://sites.google.com/a/lakeheadu.ca/bweaver/

"When all else fails, RTFM."

NOTE: My Hotmail account is not monitored regularly.
To send me an e-mail, please use the address shown above.
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Re: Proof 2=1

Bruce Weaver
Administrator
In reply to this post by Martin Holt-3
Here's something similar for any students who are currently writing exams.  

https://i1.wp.com/media-cache-ec0.pinimg.com/736x/d9/f6/fc/d9f6fcfa8557d16d22aaa590aeff1d14.jpg?zoom=2.625&resize=382%2C264

I'll try inserting the image--those reading via Nabble should be able to see
it.

<http://spssx-discussion.1045642.n5.nabble.com/file/t7186/d9f6fcfa8557d16d22aaa590aeff1d14.jpg>



Martin Holt-3 wrote

>  Xmas draws nearer!
>
> For  young statisticians...some festive funProof that  2 = 1a = ba2 =
> a.ba2 + a2 = a.b + a22a2 = a.b + a22a2 – 2ab = a.b + a2 – 2ab2a2 – 2ab =
> a2 – a.b2(a2 – a.b) = a2 – a.bDividing through by (a2 – a.b) gives
> 2=1Q.E.D.
> Martin P. Holt
>
> =====================
> To manage your subscription to SPSSX-L, send a message to

> LISTSERV@.UGA

>  (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





-----
--
Bruce Weaver
[hidden email]
http://sites.google.com/a/lakeheadu.ca/bweaver/

"When all else fails, RTFM."

NOTE: My Hotmail account is not monitored regularly.
To send me an e-mail, please use the address shown above.

--
Sent from: http://spssx-discussion.1045642.n5.nabble.com/

=====================
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
--
Bruce Weaver
bweaver@lakeheadu.ca
http://sites.google.com/a/lakeheadu.ca/bweaver/

"When all else fails, RTFM."

NOTE: My Hotmail account is not monitored regularly.
To send me an e-mail, please use the address shown above.