People who work in the data & analytics field are responsible for preparing and analysing data and generating insights from data. Skills and techniques used within data & analytics data cleaning, data formatting, data analysis, data visualization and data tooling.
In a leadership position someone is responsible for a group of people, typically an organizational unit or the entire organization, depending on the size of the organization. Leaders are responsible and accountable for overseeing and guiding strategic activities, programs and managers who report to them. Just a few people in an organization are typically in a leadership role.