TABLE 2 The Bias Measure* When Measurement Errors Exist in the Petrol Price Index,,,,,,,,,
,Classical,,,,,Berkson,,,
Parameters,"  sP
sign",0,0.1 µP,0.2 µP,0.3 µP,0,0.1 µP,0.2 µP,0.3 µP
Purchase ,,,,,,,,,
b0 Intercept ,(–),0,–27,–31,–29,1,–2,7,–1
b1 Age ,(+),1,0,1,0,1,1,–1,1
b2 Gender ,(+),–5,–1,2,–2,–3,2,5,1
b3 Income ,(+),–7,0,–6,–18,–15,–3,14,–25
b4 Petrol price ,(–),–1,89,102,99,–4,2,–29,5
Recreation ,,,,,,,,,
b5 Intercept ,(–),5,43,45,47,–2,0,0,0
b6 Age ,(–),0,1,–3,–1,1,1,0,2
b7 Gender ,(–),2,–5,3,–1,–3,–5,9,–5
b8 Income ,(–),–1,–6,–4,–7,–7,–5,–2,–1
b9 Petrol price ,(+),–13,–91,–95,–100,3,–1,0,0
* This is the mean of 100  over the replications.,,,,,,,,,