Probability

───✱*.｡:｡✱*.:｡✧*.｡✰*.:｡✧*.｡:｡*.｡✱ ───

Elements of Probability

• Experiment → repeatable process with outcome (such as a coin flip)
• Sample Space () → all possible outcomes ()
• Event → subset of sample space (flipping and getting )
• Probability →
  • If you roll a D6, the chance of rolling a 4 →

Special Events

• Certain Event → always happens
• Impossible Event → never happens

Multiplicative Rule (And)

• The probability that two events both happen

Dependent Probabilities

• Outcome of one event does effect the other
• • → probability of given has happened already

Independent Probabilities

• Outcome of one event does not effect the other

Additive Rule (Or)

• • If events are independent,

───✱*.｡:｡✱*.:｡✧*.｡✰*.:｡✧*.｡:｡*.｡✱ ───