Two events that have the same chance of happening. For example, if I flip a coin the event of obtaining a 'head' is equally as likely as the event of obtaining a 'tail'.
But equally likely does not mean 0.5 probability. It's possible that it's equally likely that someone in Ontario, Canada will die from being stung by a wasp as from being electrocuted in their kitchen at home. Neither event is very likely but the two events could be equally likely.
Two events are equally unlikely if the probability that they do not happen is the same for each event. And, since the probability of an event happening and not happening must add to 1, equally unlikely events are also equally likely,
Theoretical probability is the probability of an event when all outcomes are equally likely. With theoretical probability, you determine the probability by dividing the number of ways the event can occur by the total number of equally likely outcomes.
http://www.emathzone.com/tutorials/basic-statistics/definition-of-probability.html
That's the 'probability' of a favorable outcome.but only if the outcomes are equally likely.
It is more LIKELY to have a likely event than a UNLIKELY event.
Two events are equally unlikely if the probability that they do not happen is the same for each event. And, since the probability of an event happening and not happening must add to 1, equally unlikely events are also equally likely,
It refers to two event which are equally likely to occur.
Theoretical probability is the probability of an event when all outcomes are equally likely. With theoretical probability, you determine the probability by dividing the number of ways the event can occur by the total number of equally likely outcomes.
a stovepipe because a vest doesn't have any sleeves!
The probability of an event is the ratio of the number of equally likely oucomes of a trial which are favourable to that event, and the total number of outcomes.
... then all outcomes are equally likely. Nothing more, nothing less. You can always re-define the outcomes so that they are not all equally likely. For example, on a single roll of a fair die, the numbers 1 to 6 are equally likely. But redefine the events so that Event A = prime number Event B = composite number Event C = neither prime nor composite number then P(A) = 1/2, P(B) = 1/3 and P(C) = 1/6 : events with unequal likelihood.
When you are asked what is the probability of drawing "thing a" when you have only the same amount of "thing b," is called an equally likely event. For example: In a hat you have 8 black marbles and 8 black marbles. Since there the same amount of both, the chance of picking a black marble is 50% and picking a blue marble is 50%. This is an equally likely event.
http://www.emathzone.com/tutorials/basic-statistics/definition-of-probability.html
The modelling of a probability distribution function for an event from a theoretical approach.
If each of the ways is equally likely then it is the probability of the event but otherwise it is simply a ratio.
If you can enumerate the outcome space into equally likely events, then it is the number of outcomes that are favourable (in which the event occurs) divided by the total number of outcomes.
Each outcome has a probability of 0.05