How does TI ensure quality of the Barometer?
The Barometer questionnaire is reviewed by TI’s Index Advisory Committee consisting of leading international experts in the field of corruption, econometrics and statistics. Members of the Committee make suggestions for improving the Barometer, but the management of TI takes final decisions on the survey design and its uses. Gallup International, who conducts the survey on behalf of TI, checks the data as part of its due diligence in conducting the Voice of the People Survey.