Two-Way Table: Conditional Chances Both Ways Round

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Name of the group

Name of the rest

Name of the result

Name of its opposite

Total

How many in the group e.g. rainy days

Of the group, how many have the result

Of the rest, how many have the result

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Enter your numbers, then press Calculate.

From the book, Chapter 4. The book’s 1,000 commutes: 300 rainy, 120 of them late; 70 of the 700 dry ones late. Late overall 19%; late given rain 40%; late given dry 10%; but rain given late is 63.2%. The lucky shirt won 60% of games with it and 60% without: independent.

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