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probability
Definition;
Probability is the measure of the likelihood of an event to occur
...
We can predict only the chance of
event to occur, how likely they are to happen, using probability
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The Line of Probability-
Tossing a coin, Sample Space (S) = {H, T}
Rolling a die, Sample Space (S) = {1, 2, 3, 4, 5, 6}
Sample Space is made up of Sample Points:
Sample Point- It is one of the possible results
Examples- Deck of Cards
4 of hearts is a sample point th I-IN- 6 CHANCE
General Probability Formula-
4- IN-5 CHANCE
Probability of event to happen P (E)
General Terms Related To Probability
Sample Space- The set of all the possible outcomes to occur in any trial is known as sample space
...
As there are four Queens i
...
four
different sample points
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Examples:
Tossing of a coin, Selecting a card from deck of cards, throwing a dice
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Examples EventsRolling a "1" is an event
Getting a Heads while tossing a coin is an event
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Workout problem:
A box contains 5 green pens,3 blue pens,8 black pens and 4 red
pens
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What is the probability of the pen is green?
Solution:
n( S)=5+3+8+4=20,n(green pens)=5
n(green pens)
p(green)=
n(s)
= 5\20=1\4
P(green)=1\4