出典:国際連合
It is often necessary to graduate distributions to correct the tendency of people to give their replies in round numbers 1. Heaping 2 or digit preference 2 is particularly frequent in age distributions and reflects a tendency for people to state their ages in numbers ending with 0, 5, or other preferred digits. Age heaping 3 is sometimes measured with indices of age preference 4. Age data must often be corrected for other forms of age misreporting 5 or age reporting bias 5. More...
出典:Wiktionary
「heaping」は動詞「heap」の現在分詞です