The use of bracketing in wealth surveys is sometimes criticized on the grounds that it will encourage respondents to substitute rough guesses for careful thought. In such a manner, the use of bracketing will "crowd out" more specific answers, creating the illusion of a reduction in nonresponse....

The use of bracketing in wealth surveys is sometimes criticized on the grounds that it will encourage respondents to substitute rough guesses for careful thought. In such a manner, the use of bracketing will "crowd out" more specific answers, creating the illusion of a reduction in non-response....

This paper utilizes techniques from combinatorics to derive a closed form solution for an estimator of that portion of a Hirschman-Herfindahl index which measures concentration for that segment of the market with unattributed market share. This index makes more complete use of sample information...