A new approach in business travel survey: Multivariate techniques for strata design

Abstract

Business travel demand in official statistics is often measured by means of households/travellers survey. Such approach produces very little evidence about expenditure and demand structure because for that purpose others statistical units should be sampled. Enterprises - that actually buy business travels - are rarely interviewed. The application of CHAID technique to data from an explorative sampling survey on the Italian enterprises shows statistically significant relationships among business travel expenditure, enterprise size and economic sector. The multivariate analysis allows to derive the definition of the optimal strata design for survey on business travel through enterprises interviews.