Testing for exponential relationship graphically

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Mutleybm1996
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Hi all,

Could you possibly give your opinion on whether this graph of -ln(viscosity) over Temperature would represent an exponential relationship? It seems to be a straight enough line, however i wanted your opinion.

Thank you
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username1560589
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(Original post by Mutleybm1996)
Hi all,

Could you possibly give your opinion on whether this graph of -ln(viscosity) over Temperature would represent an exponential relationship? It seems to be a straight enough line, however i wanted your opinion.

Thank you
looks like it
what module is this for?
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Mutleybm1996
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(Original post by morgan8002)
looks like it
what module is this for?
None, it's for Physics.
But I always get quicker responses from the Maths forum and it crosses into mathematics so I posted it here instead...I hope that's okay!

This is the original graph, would you say that it's exponential. I was wondering if the bit at the bottom(where it levels off) may become more..linear..for use of a better term?
Could i somehow analyse this, by looking at the gradient at different points etc?
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username1560589
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(Original post by Mutleybm1996)
None, it's for Physics.
But I always get quicker responses from the Maths forum and it crosses into mathematics so I posted it here instead...I hope that's okay!

This is the original graph, would you say that it's exponential. I was wondering if the bit at the bottom(where it levels off) may become more..linear..for use of a better term?
no, probably not, exponentials level off very fast
its usually ok because of the cross overs between maths and physics
I only asked out of curiosity because maths log law questions are less detailed on the units
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username1560589
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about using the gradient, there aren't enough data points for this to be reliable
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Mutleybm1996
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(Original post by morgan8002)
no, probably not, exponentials level off very fast
its usually ok because of the cross overs between maths and physics
I only asked out of curiosity because maths log law questions are less detailed on the units
So, taking logs suggests that it's exponential. However, upon looking at the graph it doesn't appear to be?
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username1560589
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(Original post by Mutleybm1996)
So, taking logs suggests that it's exponential. However, upon looking at the graph it doesn't appear to be?
sorry I meant that it probably wasn't significant and the graph is probably exponential
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Mutleybm1996
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(Original post by morgan8002)
sorry I meant that it probably wasn't significant and the graph is probably exponential
Thank you
This was of great help!
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