In this short paper we have shown that in multiphase sampling the regression type estimator is based upon two phases only.
In these situations the multiphase sampling can be used as an alternate.
These results have been given by considering two different regression type estimators in multiphase sampling design.
We again consider another formation of the estimator for use in multiphase sampling.
In this short article we have considered the estimation problem in multiphase sampling.
Multiphase sampling has been widely used in literature when information about sampling frame is not available.
The multiphase sampling is a popular rescue source in these sorts of situations.
The multiphase sampling design is perhaps the most powerful design that can be efficiently used in situations where sampling frame is not available.
We now provide the main theme of multiphase sampling by describing some of the common notations.
In this section we have given some main results for estimation in multiphase sampling.