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Windows 7: Today [12]

14 Oct 2013   #1751
kado897

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bit Service Pack 1
 
 

Quote   Quote: Originally Posted by marsmimar View Post
Quote   Quote: Originally Posted by Borg 386 View Post
Today & tomorrow we have Fall Break. Two days of relaxing....or in my case, hitting the online math homework problems to get them done. Most of which have formulas like this:
The answer is 42
Ah but what is the ultimate question?
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14 Oct 2013   #1752
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by Borg 386 View Post
Today & tomorrow we have Fall Break. Two days of relaxing....or in my case, hitting the online math homework problems to get them done. Most of which have formulas like this:
Simple correlation coefficient .... large to look, easiest to compute within bivariate/multivariate analysis

Tonight it was a fun night. Crackers, fireworks, music, DJ, dance .....
My System SpecsSystem Spec
14 Oct 2013   #1753
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by x BlueRobot View Post
Quote   Quote: Originally Posted by Borg 386 View Post
Today & tomorrow we have Fall Break. Two days of relaxing....or in my case, hitting the online math homework problems to get them done. Most of which have formulas like this:
Doesn't the E symbol mean sum of?
That is the summation notation, Capital Sigma.
In the same equation, there is a part that is also denoted by sigma, but small sigma, which means standard deviation. This part of the denominator is read as "Sigma X" or SD of X ....
Today [12]-1.jpg
And the other part is as Sigma Y, SD of Y.


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.

14 Oct 2013   #1754
mitchell65

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by Arc View Post
That is the summation notation, Capital Sigma.
In the same equation, there is a part that is also denoted by sigma, but small sigma, which means standard deviation. This part of the denominator is read as "Sigma X" or SD of X ....
Attachment 289755
And the other part is as Sigma Y, SD of Y.
Just couldn't agree with you more Arc
My System SpecsSystem Spec
14 Oct 2013   #1755
kado897

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bit Service Pack 1
 
 

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14 Oct 2013   #1756
andrew129260

Windows 10 Pro
 
 

Quote   Quote: Originally Posted by Arc View Post
Quote   Quote: Originally Posted by x BlueRobot View Post
Quote   Quote: Originally Posted by Borg 386 View Post
Today & tomorrow we have Fall Break. Two days of relaxing....or in my case, hitting the online math homework problems to get them done. Most of which have formulas like this:
Doesn't the E symbol mean sum of?
That is the summation notation, Capital Sigma.
In the same equation, there is a part that is also denoted by sigma, but small sigma, which means standard deviation. This part of the denominator is read as "Sigma X" or SD of X ....
Attachment 289755
And the other part is as Sigma Y, SD of Y.

My head hurts........
My System SpecsSystem Spec
14 Oct 2013   #1757
Barman58

Windows 10 Pro x64 x3, Ubuntu
 
 

Quote   Quote: Originally Posted by andrew129260 View Post
Quote   Quote: Originally Posted by Arc View Post
Quote   Quote: Originally Posted by x BlueRobot View Post

Doesn't the E symbol mean sum of?
That is the summation notation, Capital Sigma.
In the same equation, there is a part that is also denoted by sigma, but small sigma, which means standard deviation. This part of the denominator is read as "Sigma X" or SD of X ....
Attachment 289755
And the other part is as Sigma Y, SD of Y.

My head hurts........
My System SpecsSystem Spec
14 Oct 2013   #1758
x BlueRobot

 

Quote   Quote: Originally Posted by Arc View Post
Quote   Quote: Originally Posted by x BlueRobot View Post
Quote   Quote: Originally Posted by Borg 386 View Post
Today & tomorrow we have Fall Break. Two days of relaxing....or in my case, hitting the online math homework problems to get them done. Most of which have formulas like this:
Doesn't the E symbol mean sum of?
That is the summation notation, Capital Sigma.
In the same equation, there is a part that is also denoted by sigma, but small sigma, which means standard deviation. This part of the denominator is read as "Sigma X" or SD of X ....
Attachment 289755
And the other part is as Sigma Y, SD of Y.
The Capital-sigma notation doesn't actually seem difficult to understand, well at least, the Wiki article gave a example which I could understand

Today [12]-86f29dd472e9c009dc324ec6c161d367.png

Quote:
Where, i represents the index of summation; ai is an indexed variable representing each successive term in the series; m is the lower bound of summation, and n is the upper bound of summation. The "i = m" under the summation symbol means that the index i starts out equal to m. The index, i, is incremented by 1 for each successive term, stopping when i = n
Today [12]-1a693bfe9a392b08ed135a9e4117d3b9.png


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14 Oct 2013   #1759
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1
 
 

I was going to guess hieroglyphics

A Guy
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14 Oct 2013   #1760
LADYPINKtomato1

Windows 8 - 64-bit
 
 

I almost said ... GREEK, or would it have been GEEK ???.. lol
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