McNemar's Test Calculator

http://scistatcalc.blogspot.in/2013/11/mcnemars-test-calculator.html

Formula

McNemar Test Statistic is

$\chi^2 =\dfrac{(b-c)^2}{(b+c)}$

Statistic with Yates's correction of continuity

$\chi^2 =\dfrac{(|b-c|-0.5)^2}{(b+c)}$

Suggestions and comments will be appreciated.