Oggy Oggy Oggy at Cornish rugby matches so this seem another possible origin. The Oxford English Dictionary (2004) entry for "Oggy" states: "Oggy, "noun". "West Country regional" (orig. "Cornwall") and "Navy" slang. A Cornish pasty. Probably an alteration of Cornish "hoggan" pastry, pie (18th century), perhaps cognate with Welsh "chwiogen" muffin, simnel cake (1562), of unknown origin." Members of the Royal Navy claim to have used the chant, or a version of it, since the Second World War. The 'Oggie, Oggie, Oggie' chant was used by supporters of the Royal Navy's Devonport Field Gun Team. (The field gun competition was disbanded in 1999
Differential item functioning Differential item functioning Differential item functioning (DIF) is a statistical characteristic of an item that shows the extent to which the item might be measuring different abilities for members of separate subgroups. Average item scores for subgroups having the same overall score on the test are compared to determine whether the item is measuring in essentially the same way for all subgroups. The presence of DIF requires review and judgment, and it does not necessarily indicate the presence of bias. DIF analysis provides an indication of unexpected behavior of items on a test. An item does not display DIF if