In this session, Will worked with lines of regression. He first takes data and creates a scatter plot. All of the scatter plots for the first few days will be linear. He than draws a line of best fit using his best judgment and makes a prediction about some future data point. Will then enters the data in his graphing calculator and the program makes a scatter plot. The calculator then determines the exact line of best fit. The last step is to use this line of best fit to predict a future data outcome.