Threaded Mode | Linear Mode

Albert Chan · (This post was last modified: 05-24-2024 07:15 PM by Albert Chan.)

(05-23-2024 10:56 PM)SlideRule Wrote: "in other words, 25% of the people who had negative tests with the previous detection
process actually had this specific cancer." Is this statement correct?

Technically, it is possible, but it is un-related to the new test.

carey's number, true cancer rate = 20%

Code:

                 | Positive   | Negative  Total

Cancer           |       0    |     20       20

No Cancer        |      20    |     60       80

       Total            20          80

False positive = 20/20 = 100% // extremely bad test!
False negative = 20/80 = 25%