###### Asked in Math and Arithmetic

Math and Arithmetic

# What type of event is Theoretical probability of 1?

## Answer

###### Wiki User

###### June 26, 2017 7:25PM

It is a certainty.

## Related Questions

###### Asked in Probability

### What is probability?

###### Asked in Math and Arithmetic, Probability

### How did theoretical probability get its name?

The theoretical probability of an event is the probability that
is calculated on theoretical considerations. This normally entails
modelling the experiment and then employing the laws of science to
determine the event space and the probabilities of the
outcomes.
For example, suppose you wish to determine the theoretical
probability of getting the number 5 when you roll a normal die.
There are 6 possible outcomes. If the die is fair then each of
these outcomes is equally likely. Therefore the probability of any
particular number - for example, 5 - is 1/6.

###### Asked in Probability

### What is the definitions of a theoretical probability?

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.

###### Asked in Probability

### What does it mean to find the compliment of the probability of an event?

The complement (not compliment) of the probability of event A is
1 minus the probability of A: that is, it is the probability of A
not happening or "not-A" happening.
The complement (not compliment) of the probability of event A is 1
minus the probability of A: that is, it is the probability of A not
happening or "not-A" happening.
The complement (not compliment) of the probability of event A is 1
minus the probability of A: that is, it is the probability of A not
happening or "not-A" happening.
The complement (not compliment) of the probability of event A is 1
minus the probability of A: that is, it is the probability of A not
happening or "not-A" happening.

###### Asked in Math and Arithmetic, Statistics, Probability

### Definition of theoretical probability?

The term "theoretical probability" is used in contrast to the
term "experimental probability" to describe what the result of some
trial or event should be based on math, versus what it
actually is, based on running a simulation or actually
performing the task. For example, the theoretical probability that
a single standard coin flip results in heads is 1/2. The
experimental probability in a single flip would be 1 if it returned
heads, or 0 if it returned tails, since the experimental
probability only counts what actually happened.

###### Asked in Statistics, Probability

### What does probability of an event mean?

Probability is the likelihood, expressed in numerical or
ratiometric terms, that an event will occur. A probability of 1
means that the event will occur. A probability of 0 means that the
event will not occur. A probability of 0.5 means that the
likelihood of the event occurring is equal to the likelihood of it
not occurring. For instance, a fair coin has a 0.5 probability of
being heads, and a 0.5 probability of being tails.
Defined formally, probability is the number of permutations of
the desired outcome divided by the number of permutations of all
possible outcomes. Take a standard six-sided die, for instance.
There are six permutations. One of them is a 1, so the probability
of rolling a 1 is 1 in 6, or about 0.1667.
Probability is not assured. If you roll a die 600 times, you
will not necessarily get 100 1's. Over the long run, you will
approach that outcome, but each trial will have different results.
This is the difference between theoretical probability and
experimental probability - theoretical being the mathematical
estimate - experimental being the observed results.

###### Asked in Probability

### If the odds against an event are 9.8 find the probability that the event will occur?

Odds against A = Probabillity against A / Probability for A Odds
against A = (1 - Probabillity for A) / Probability for A 9.8 = (1 -
Probabillity for A) / Probability for A 9.8 * Probability for A = 1
- Probability for A 10.8 * Probability for A = 1 Probability for A
= 1 / 10.8 Probability for A = 0.0926

###### Asked in Probability

### What is a probability of 1?

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