<prompt> While analysing a data, allocation into similar groups is done to ensure -ComparabilityAccuracyValiditySensitivity  <response>: Ans. is a i.e., Comparability o Both groups study and control should be comparable in respect of all the possible varibles, which may influence the outcome. o So that, except for the factor under study will not influence the outcome confoundation and bias can be minimized. 