Use of Scrambled Responses on Two Occasions Successive Sampling under Non-Response

Search of Good Rotation Patterns through Exponential Type Regression Estimator in Successive Sampling over Two Occasions

The problem of estimating the finite population mean on the second (current) occasion in successive sampling over two occasions has been discussed. Utilizing all the readily available information from first and second occasions, an efficient estimation procedure through exponential type regression estimator has been developed. It has been shown that the proposed procedure is more efficient than...

Estimating quantiles under sampling on two occasions with arbitrary sample designs

A practical problem related to the estimation of quantiles in double sampling with arbitrary sampling designs in each of the two phases is investigated. In practice, this scheme is commonly used for official surveys, in which quantile estimation is often required when the investigation deals with variables such as income or expenditure. A class of estimators for quantiles is proposed and some i...

Estimating Variance of the Sample Mean in Two-phase Sampling with Unit Non-response Effect

In sample surveys, we always deal with two types of errors: Sampling error and non-sampling error. One of the most common non-sampling errors is nonresponse. This error happens when some sample units are not observed or viewed but they do not answer some of the questions. The complete prevention of this error is not possible, but it can be significantly reduced. The non-response causes bias and ...

Use of Auxiliary Information for Estimating Population Mean in Systematic Sampling under Non- Response

Generalized Family of Estimators for Imputing Scrambled Responses

When there is a high correlation between the study and the  auxiliary variables, the rank of the auxiliary variable also correlates with the study variable. Then, the use of the rank as an additional auxiliary variable may be helpful to increase the efficiency of the estimator of the mean or total of the population.   In the present study, we propose two  generalized familie...