How Do You Determine if Two Values Agree?

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To determine if two values agree, a comparison test can be used, where the ratio R is calculated as R=(x1-x2)/√(sigmax1^2 + sigmax2^2). Values are considered to agree if R is less than 2 and disagree if R is greater than 2. The user initially sought clarification on this method but found the answer through further research. The discussion also included a welcoming response from another forum member. Understanding this ratio is essential for evaluating the agreement between two measurements.
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SOLVED:Agreement of 2 values

This is my first post, so I hope this is the write section for it..

How do you check if 2 values agree with each other (I've seen it called the "comparison test", but I can't find what I'm looking for by google-ing that).

For example, you have

x1=563+-12
x2=545+-38

And you have to find the "ratio". The values are said to agree if R<2 and disagree if R>2

Thanks,
Graham



EDIT: found the answer

R=(x1-x2)/root(sigmax1^2 + sigmax2^2)
 
Last edited:
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Welcome to PF!

Hi Graham!

Glad you sorted it out! :smile:

Anyway, welcome to PF …

and here's a square-root: √ and a plus-or-minus: ± and a sigma: σ for you. :wink:​
 

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