Q: Posterior and prior probability what do they mean?

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Um... how am i supposed to know

The probability of a boy is still 0.5 no matter how many prior children there are.

An event, unless it already had been occured and the experiment tries to resolve posterior probabilities on the event

Read the introduction to probability and probability measures at StatLect.com

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A posterior probability is the probability of assigning observations to groups given the data. A prior probability is the probability that an observation will fall into a group before you collect the data. For example, if you are classifying the buyers of a specific car, you might already know that 60% of purchasers are male and 40% are female. If you know or can estimate these probabilities, a discriminant analysis can use these prior probabilities in calculating the posterior probabilities. When you don't specify prior probabilities, Minitab assumes that the groups are equally likely.

Prior probability is the probability that is assessed before reference is made to relevant observations.

the date must be posterior to todays date. what does this mean?

It means the placenta is located in the posterior wall of uterus

False

Um... how am i supposed to know

The probability of a boy is still 0.5 no matter how many prior children there are.

An event, unless it already had been occured and the experiment tries to resolve posterior probabilities on the event

From a probability perspective fair means equal probability.

Read the introduction to probability and probability measures at StatLect.com

It's relative to the subject. Anterior refers to the "beginning" while posterior refers to an "end"

It means multiply, Probaility of A and B means probability of A multiplied by probability of B.