Flashcards
Probability
Flashcards do conjunto (11)
- 1Random ProcessA process leading to outcomes which are not
known in advance. - 2Sample SpaceCollection of all possible outcomes
- 3ProbabilityNumerical measure of
likelihood that the event
will occur - 4Probability - Statistical DefinitionP(an event occurs)
= no of data (observations) satisfying the
event / total no of observations (data) - 5Conditional ProbabilityEvent Probability Given that Another Event
Occurred
P(A | B) = P(A ∩ B) , P(B)>0
P(B) - 6Random VariableA random variable is a function or rule that assigns a number
to each outcome of an experiment. - 7Two Types of Random Variables…Discrete Random Variable
– one that takes on a countable number of values
– E.g. values on the roll of dice: 2, 3, 4, …, 12
Continuous Random Variable
– one whose values are not discrete, not countable
– E.g. time (30.1 minutes? 30.10000001 minutes?) - 8Probability DistributionsA probability distribution is a table, formula, or graph that
describes the values of a random variable and the probability
associated with these values. - 9The discrete probability distribution represents a populationSince we have populations, we can describe them by
computing various parameters.
E.g. the population mean and population variance. - 10Population MeanThe population mean is the weighted average of all of its
values. The weights are the probabilities. - 11Cumulative distribution function (cdf)It is a function that provide the cumulative probability up to a point
for a random variable (r.v).
Informações
- Descrição
- Business Statistics FlashCards sobre Probability, criado por Suresh Kumar Rajendran em 02-04-2017.
- Criado por
- Suresh Kumar Rajendran
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