(Co-)author from Y | No (co-)author from Y | row sums | |
---|---|---|---|
(Co-)author from X | CXY | CX – CXY | CX |
No (co-)author from X | CY – CXY | T – CX – CY + CXY | T – CX |
column sums | CY | T – CY | T |
e does possess attribute Y | e does not possess attribute Y | row sums | |
---|---|---|---|
e does possess attribute X | Number of elements possessing X and Y | Number of elements possessing X but not Y | Number of elements possessing X |
e does not possess attribute X | Number of elements possessing Y but not X | Number of elements possessing neither X nor Y | Number of elements not possessing X |
column sums | Number of elements possessing Y | Number of elements not possessing Y | Number of elements |
Y | not Y | |
---|---|---|
X | a | b |
not X | c | d |