X2: How many items?
You are about to enter a two columns of numbers.
The first will be your data (usually counts) xi,
the second will be your the corresponding expected results
How many data items do you have to calculate (i.e., what is the
value of k)?
(There is no harm in over estimating: blanks will be
ignored. Max=99, Min=2. Note however that data and expectations
must be properly paired.)