The expected numbers (under the null hypothesis) in each cell are equal to. Thus for the introvert/red cell the expected number is. To calculate the chi-squared (c2) statistic the value of. needs to be calculated for each cell in the table.
Ledger Board Definition. A ledger board is a horizontal lumber beam attached to an existing wall and used to tie in construction elements such as porch roofs and decks. A deck ledger is installed as part of the deck frame construction. The frame is then attached at either end, with the deck joists butting up to it.
Also, leger. Angling. a lead sinker with a hole in one end through which the line passes, enabling the bait and the sinker to rest on the bottom and allowing the fish to take the bait without detecting the sinker. Origin of ledger Expand. 1475-1485. 1475-85; earlier legger book, probably equivalent to legg(en) to lay1 + -er -er1.