<prompt> An investigator into the life expectancy of IV drug abusers divides a sample of patients into HIV positive and HIV negative groups. What type of data does this division constitute ?NominalOrdinalIntervalPoion  <response>: Ans. is a i.e., Nominal In the question, data has been divided into two groups, i.e. HIV positiveHIV negative Data should be measured on nominal scale especially Dichotomous type of nominal scale. 