@article {10.3844/jmssp.2021.44.49, article_type = {journal}, title = {A Suggested Nonparametric Bivariate Logistic Density Estimator with Application on the Productivity of Egyptian Wheat during 2019/2020}, author = {Abo-El-Hadid, Samah M.}, volume = {17}, year = {2021}, month = {May}, pages = {44-49}, doi = {10.3844/jmssp.2021.44.49}, url = {https://thescipub.com/abstract/jmssp.2021.44.49}, abstract = {In this study, the nonparametric standard logistic density estimator, introduced by Abo-El-Hadid (2018), is extended to the bivariate case. The multiplicative standard logistic distribution is used as a kernel function to derive the bivariate kernel estimator. The statistical properties of the resulting estimator are studied, which are: The asymptotic bias, variance, Mean Squared Error (MSE) and Integrated Mean Squared Error (IMSE); also, the optimal bandwidth is obtained. A simulation study is introduced to investigate the performance of the proposed estimator with other estimators. We also apply the proposed estimator to a real data set to estimate the bivariate density of the planted and productive areas of wheat in Egypt.}, journal = {Journal of Mathematics and Statistics}, publisher = {Science Publications} }