Chi-square test on ti-83?

I am trying to do a chi-square test on a ti-83. Both the observed values and expected values are in 1 column, 4 row tables each. For observed I have 315, 101, 108, and 32, and expected I have 313, 104, 104, and 35. I carry out the test on the calculator but I get a domain error every time. I know the values are input correctly and I have the correct matrices igned to observed and expected. Any ideas on what is going wrong?