$$\chi ^ { 2 } = \sum \frac { | O - E | - 0.5 ^ { 2 } } { E }$$

Short Answer

$$\chi ^ { 2 } = \sum \frac { | O - E | - 0.5 ^ { 2 } } { E }$$ The method that uses the formula is called the __________ correction for
continuity.