For the case of automotive parts, the above service bundles were paired up to represent a total
of 36 (= (9 x 8)/2) hypothetical scenarios of binary carrier choice. It is unrealistic to ask each respondent to evaluate and state his/her selection for all 36 scenarios.
Therefore, these 36 scenarios were randomly arranged into 2 mutually exclusive sets.
Each set contained 18 choice scenarios.
Each respondent will be presented with and asked to deal with only a single set of choice scenarios during the survey.
Similarly, a total of 120 (= (16 x 15)/2) binary choice scenarios were obtained for the case of consumer goods distribution.
They were further arranged into 8 mutually exclusive sets of scenarios.
Each set had 15 binary choice situations.
In the third stage survey, we received participation from 21 and 19 producers of automotive parts and consumer goods respectively.
Their current typical experience with each concerned service attribute is presented in Table 7.