Making the usage data more meaningful and insightful has been a task for all libraries. Data-based decision making can help libraries improve their service and function such as library collection development and management. Our poster will demonstrate our experiment with traditional statistical methods and data analytics such as linear regression to analyze our library’s e-resources usage data. By doing that we are trying to understand the relationship between the different variables and forecast the future usage of our e-resource collections. Thus it can help us make effective decision in e-resource collection development and management. R software is used in our project.