Mathaid interactive Probability and Statistics tutorial is a new java-based package for e-lear ning and home schooling. It guides the user through all steps of the learning process, from theoretical concepts, exam ples, problem-solving lessons, drills to customized tests including solutions and evaluation. The emphasis is on inter activity and "living" formulas - the unique graphics and animations bring life to the formulas and make learning and ex ploring maths real fun. Topics covered: counting principles and probability, random variables, discrete distributions, continuous distributions, distributions related to the normal, parameter estimation, hypothesis testing, linear regress ion. The demo version contains selected lessons from the full version, fully functional, all features included.