(a) How many cubtomens were survered? (0) Wiy are theie byariate data? Whas type of varable is ebch one? These are blyariate dats becmuse there are tho variables, peferred method of poyment and number of purchates. Doth of these varubles are quant iative These are D.rariate data because there are teo variables, prefered miethod of payment and mumber of purchaiei. Gighi of theis variablet ans qualitative. is qualitative..