I work as a teaching assistant in pharmacolgy and toxicology department, faculty of pharmacy, Egypt. MSc in pharmacology and toxicolgy in Alzheimer's disease field. I have a great experience in dealing with SPSS in biostatistics. My skills are in : 1- descriptive statistics 2- parametric tests ( student t test, ANOVA tests and ANCOVA tests) 3- non parametric tests ( chi square, mann whitney, wilcoxon, kruscal wallis and friedman tests) 4- correlation and linear regression 5- estimation of IC50 and ED50 for different drugs and chemical compounds 6- graphing 7-determination of outliers and dealing with them 8- calculation of sample size using G power .... etc So I am offering my skills to every one needs it