Classical probability theory is concerned with carrying out probability calculations based on equally
likely outcomes. That is, it is assumed that the sample space has been constructed in such a way
that every subset of the sample space consisting of a single element has the same probability. If
the sample space contains n possible outcomes (#S = n), we must have for all s 2 S,
P(fsg) =
1
n
and hence for all E S
P(E) =
#E
n
:
More informally, we have
P(E) =
number of ways E can occur
total number of outcomes
:
When you throw a die, there are six possibilities. The probability of a number from 1 to 6 is 1/6. This is classical probability. Compare this with empirical probability. If you throw a die 100 times and obtain 30 sixes, the probability of obtaining a 6 is 30/100 or 0.3. Empirical probabilities change whereas classical probability doesn't.
Classical Probability!
1. subjective probability (intelligent guess) 2. relative frequency (in percent) 3. classical probability (in decimal)
Classical approach has possible outcomes which are known with certainity ie sampling distribution is known. Relative approach is an approach in which probability values are based on historical interest.
Relative frequency approximation is conducting experiments and counting the number of times the event occurs divided by the total number of events. The classical approach is determine the number of ways the event can occur divided by the total number of events.
When you throw a die, there are six possibilities. The probability of a number from 1 to 6 is 1/6. This is classical probability. Compare this with empirical probability. If you throw a die 100 times and obtain 30 sixes, the probability of obtaining a 6 is 30/100 or 0.3. Empirical probabilities change whereas classical probability doesn't.
Yes.
Classical Probability!
Subjective based on information given
1. subjective probability (intelligent guess) 2. relative frequency (in percent) 3. classical probability (in decimal)
Classical approach has possible outcomes which are known with certainity ie sampling distribution is known. Relative approach is an approach in which probability values are based on historical interest.
There are three main methods for assigning probabilities Following the classical definition of probability Using relative frequencies Using subjective probability
Relative frequency approximation is conducting experiments and counting the number of times the event occurs divided by the total number of events. The classical approach is determine the number of ways the event can occur divided by the total number of events.
To me, the theoretical probability is what is termed the classical probability. This says the probability is the number of ways an event can occur divided by the number of possible events. Forexample, flip a coin. The theoretical probability for heads is 1/2. However, flip a coin 10 times and you will probably not get 5/10 (or 1/2). Doing the actual experiment to determine the probability is called relative frequency approximation.
The density matrix refers to the quantum mechanical analogue to a phase space probability measure in the classical statistical mechanics.
100
3/16 * 7/15 = 21/240