Muema, Benjamin K.2012-02-012012-02-012012-02-01http://ir-library.ku.ac.ke/handle/123456789/2539Department of Mathematics, 57p. The QA 276.8.M8 2002In this project we compare the performance of two different estimators of the population total. One estimator is model-based and the other one is model assisted. We look at model-based properties of the two estimators. We observed that under the general model, the biases of the two estimators are different.enEstimation theoryMathematical statisticsThesis