The sample space is reduced. • Key words that indicate conditional probability are: given, amongst, for • those with, … Conditional Probability probability of event occurring given that event A B “The has already occurred” is written in shorthand as Formal Definition P(A | B) = Example 1 - Conditional Probabilities from Example (cont’d) Hodgkin’s Response to Treatment None Partial Positive ROW TOTALS Type of LD 44 10 18 72 LP 12 18 74 Hodgkin’s 104 Disease MC 58 54 154 266 NS 12 16 68 96 COLUMN 126 98 314 n = 538 TOTALS A study was conducted in 1991 by the and the Wisconsin Department of Transportation in Example 2 - which linked police reports and hospital discharge records were used to assess, among other things, the risk
• The sample space is reduced. • Key words that indicate conditional probability are: given, amongst, for those with, … Conditional Probability “The probability of event A occurring given that event B has already occurred” is written in shorthand as Formal Definition P(A | B) = Example 1 (cont’d) - Conditional Probabilities from Hodgkin’s Example Response to Treatment None Partial Positive ROW TOTALS Type of Hodgkin’s Disease LD 44 10 18 72 LP 12 18 74 104 MC 58 54 154 266 NS 12 16 68 96 COLUMN TOTALS 126 98 314 n = 538 Example 2 - A study was conducted in 1991 by the and the Wisconsin Department of Transportation in which linked police reports and hospital discharge records were used to assess, among other things, the risk
5%20-%20Probability%20Intro.docx