The first role of Statistics is to reduce this mass of complex data to a simpler form in order to facilitate understanding and learning from the data. This is often done by making graphical representations of the data. Statistics can make a lot of numerical data easily understandable. The world today abounds i­n textual data. Words, SMSs, tweets, social media posts, verbal responses in questionnaires, these can all be treated as data. Climate data, measurements from tens of thousands of weather stations across the world, is an example of big data.