any idea what a 1950 rated chess.com rapid player would be on fide

No. If you think that's so, can you please give a link to some kind of scholarly article?

For instance, volatility on the stock market on in precious metals' prices does not refer to a range of prices but a tendency towards abrupt change due to apparently small impetus to cause it. An example is that up to about a couple of years ago, a tiny change in the gold price would trigger a big change in silver. Gold could change from 1500 to 1550, a change of 3% and trigger a change in silver from 15 to 18, which is a change of 20%. However, the price range of gold is 1550 and the price range of silver is 18 or whatever. Silver would be referred to as more volatile than gold.

It's a direct comparison: between gold prices and rating variation. They both refer to values. Therefore unless you can find evidence of a special case involving chess ratings, you should accept that I'm right. I think it's a simple misunderstanding that you've made. That's all. Nothing to be upset about.

So volatility isn't "how far" but how fast. You forgot the time factor entirely.

Sorry, you referred to "how far", which isn't a proportion. Stop trying to win discussions on false pretences. "How far" isn't a percentage.

I think you should be here to try to learn. It would do you more good. Bye.

Or maybe you should tone down the ego and admit to yourself that you don't know what the eff you're talking about.

Oh you don't know what ego is now? But you're the one with the ego problems. I know I'm right about the meaning of "volatility" and I also know that you aren't trying to make a proper argument. Just trolling, in fact. Personal attacks. Pathetic.

Thanks for making the attempt, at least. I thought you might have used a dictionary, though. Volatility is variance with respect to time. That is, it's a measure of speed of variance or, if you like, of acceleration of change. If some dumb clucks in mathematics don't understand English, that is not my concern. If they have really used a word counter-intuitively like that, it doesn't mean that their useage takes precendence over anything. They are, after all, only mathematicians. (My son's a mathematician by profession but I'm sure he understands the meanings of words.)

Are you a mathematics student? You sound very like you are. Try a dictionary.

I think this guy is a mathematics student. Probably due to a bad teacher showing a graph and not explaining that the important thing regarding volatility is the time factor.

Thanks for making the attempt, at least. I thought you might have used a dictionary, though. Volatility is variance with respect to time. That is, it's a measure of speed of variance or, if you like, of acceleration of change. If some dumb clucks in mathematics don't understand English, that is not my concern. If they have really used a word counter-intuitively like that, it doesn't mean that their useage takes precendence over anything. They are, after all, only mathematicians. (My son's a mathematician but I'm sure he understands the meanings of words.)

Are you a mathematics student?

P.S. I mentioned no formulae. I used the word "volatility" correctly in an explanation. Should I explain what an explanation is? You claimed I had made a mistake. I showed I had not. You made a fool of yourself. End.

Not in formal English useage of course: I'm like the Emperor of China, who could wear iron shoes with ease. I can write 150 word sentences with ease.

P.S. I mentioned no formulae. I used the word "volatility" correctly in an explanation. Should I explain what an explanation is? You claimed I had made a mistake. I showed I had not. You made a fool of yourself. End.

"It's a completely ridiculous system, Glicko. Very inaccurate and volatile."

I guess you're weren't talking about the Glicko system then? You made a claim that is false. It was explained to you how that claim was false. Instead of admitting it, you decided to be a complete jerk to the people who tried explaining it to you.

Sounds like a familiar situation in another post hmmm

If this is typical behavior of his then he's right, I did make a fool of myself by attempting to help him.

Big Chess player's messing with you. He's a bit of a wind-up artist.

You are a maths student aren't you. Someone who actually had the degree and was working in the subject or doing a further degree wouldn't combine the qualities you combine.

I have thought about it and realised two things. Firstly, Big Chess Player is right and there are maths people who aren't really literate. You ARE literate but you've met someone who doesn't understand something and of course, Llama made the same mistake as you and you're fooled by that.

Both of you are confusing volatility with amplitude. Volatility isn't a measure of amplitude but I can see that it's very easy for a mathematician to look at a graph and say that the amplitude of the fluctuations is volatility and to describe it as that without realising their error. I'm sure that's what's happened. I would suggest getting a dictionary. If you like, I'll tell you what they are, so there's no more confusion. Find "volatility" in several dictionaries. It's only a small thing but trying to make a fool out of me isn't very clever, when you're the fool. I accept that there is a LOT of people with ego problems on this site. You can go back to sleep now.

Yes I'm also sure there are folks following this and laughing.

OK, ask your maths teachers or lecturers. If they agree with you then you should ask for your money back. I actually thought that you could be 18 or 19 but are you maybe 13?

I thought personal attacks were pathetic? Or is it only pathetic behavior when others do it but "winning" when you do it?

You're the most ridiculous person I've met on here for several days. Do you want a prize? Where do you get your ignorance, bad manners and your immaturity from? Find a dictionary or are you saying that you ARE a troll? Seriously. FInd a dictionary and cut and paste here.