Do some data entry

I have a data analysis task. Dear Sir/Madam I have Data for Price change and Trade volume, I want to find a way that with Trade Volume can predict Price change, it' has negative correlation, but it needs a way with nonlinear ways and using Trade Volum to predict the next price change, I need Matlab software and only I need codes and some samples for getting nonlinear correlation and regression and how to predict a nonlinear data, I need only codes with some samples and great guide, if anybody has it please contact me [Removed by Freelancer.com Admin]