|
|
|
|
New modified ratio estimator for estimation of population mean when median of the auxiliary variable is known
|
|
|
|
|
|
|
|
نویسنده
|
subramani j. ,kumarapandiyan g.
|
|
منبع
|
pakistan journal of statistics and operation research - 2013 - دوره : 9 - شماره : 2 - صفحه:137 -145
|
|
چکیده
|
The present paper deals with a modified ratio estimator for estimation of population mean of the study variable when the population median of the auxiliary variable is known. the bias and mean squared error of the proposed estimator are derived and are compared with that of existing modified ratio estimators for certain known populations. further we have also derived the conditions for which the proposed estimator performs better than the existing modified ratio estimators. from the numerical study it is also observed that the proposed modified ratio estimator performs better than the existing modified ratio estimators for certain known populations.
|
|
کلیدواژه
|
Mean squared error; Modified ratio estimator; Natural populations; Simple random sampling
|
|
آدرس
|
department of statistics,ramanujan school of mathematical sciences,pondicherry university,r v nagar,kalapet, India, department of statistics,ramanujan school of mathematical sciences,pondicherry university,r v nagar,kalapet, India
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|