Probability

Homework Alert!!!!!

You heart rate is measured.

i m studying probability m n electrical engineering student .. i red somewhere that heart beat rate is a random process but i believe it is deterministic ... and need help to clear my confusion

Why did you think it was random? It varies between people and body activity but the relationships are well known, documented and easily proven.

You can count on it.

Deterministic process obviously, a dead corpse is not going to have a heart beat no matter how many corpse samples you measure.

Determinism is the philosophical position that for every event, including human action, there exist conditions that could cause no other event.
Random events are individually unpredictable, but the frequency of different outcomes over a large number of events (or "trials") are frequently predictable. For example, when throwing two dice and counting the total, a sum of 7 will randomly occur twice as often as 4, but the outcome of any particular roll of the dice is unpredictable. This view, where randomness simply refers to situations where the certainty of the outcome is at issue, applies to concepts of chance, probability, and information entropy. In these situations, randomness implies a measure of uncertainty, and notions of haphazardness are irrelevant.
I hope that clears up any ambiguity....

rite rite .... but if if we are tossing a coin until the head comes then how are we going to find out the probability because tail might comes consecitively infinite times ... how do we find probality of such events?

Do you mean theoretically or experimentally?

For theory we are forced to use only mathematics. So, dust off your proofs and have at it.

Experimentally, we run an experiment n times and log the results. The number n is a number that we choose that will satisfy that the experimental errors are lower than the degree of precision required for calculating the probability. In other words, experiments only yield a finite degree of precision, not an absolute degree of certainty. You will need to run a statistical analysis to determine the value of n. Almost seems circular, no?

In the end, we actually live in a non-deterministic universe. So, if you should feel like arguing that point to an instructor or a colleague, you will have quantum mechanics to back up that claim, but be forewarned that you better understand what you are talking about. ;-)

What are you talking about?

This comparison isn't even apples to oranges... it's more like comparing apples to solar powered stamp lickers.

I can't flip a coin with my heart, then I'm funny that way.

One of the points of linguistics is that word structures have specific meanings. Your initial question specifically asks if finding a heart beat is a random or deterministic process. This structure implies that one is trying to measure a heart beat rate. This is a very deterministic process because someone must be determined to measure the heart beat rate. I suspect that this is not what you actually meant to ask but it is what you actually asked.

What I think you meant to ask is does the heart beat rate of an organism (person?) ever randomly change for no apparent reason? This is probably true but very hard to prove today for we know of so many things that can change a heart rate that it is hard to be certain that one is aware of everything that can change a heart rate.

If my supposition is not correct, please explain.

I think it depends on the paradigms under which the heart beat is sampled.

This also could be subject to juxtaposition of the conditions and the deterministic randomness of the parameters.

yes exactly that was what i meant to ask

the fact is that we havean idea of what would be the heart beat rate of a person normally ... but the person might have been running for some time .. or he might had been told a bad news or a very good news ... but still performing lots of trials we can actualy get to a value that has the highest probabiloty ..and makes us predictive about this process which makes it deterministicic my sense...

http://www.thehindubusinessline.com/opinion/indias-substandard-engineering-colleges/article4800823.ece

We have some very intelligent Indian members on the forum.

Older and wiser, I'll wager.

With prospects like energypassion97 the future may be grim.

I'd say that the jury is still out on the OP.

Look up arrhythmia, tachacardia, and bradycardia on a medical site. While a random sampling of heart rates may turn up a few cases, the number of occurrences will go up with your sample size, and the frequency will stabilize as the proper sampling population is reached. Hint, you will find these statistics heavily skewed if you're in a CICU or a cardiologist's office.