One of the assumptions of Pearson's chi-squared test (for independence) is that expected frequencies are all >=5 in a 2x2 table OR 80% of the expected frequencies are >=5 in larger tables.
If this is not the case for a 2x2 table, Yates' correction can be applied.
When presenting data, it is good practice to state the assumptions. If Yates' correction has been applied, is it correct to:
a) show that the expected frequency assumption is NOT met (hence the use of Yates' correction)
b) not state the expected frequency assumption at all i.e. does it cease to be an assumption of the test?