RD Sharma Solutions for Class 7 Chapter 22 “Collection and Organisation of Data”. Data handling is the method of performing statistical analysis on the given data. What is Data? Why do we need it? Data are individual pieces of information, information about a particular system. The average human body temperature is 37oC, which is data. The number of students in your class is also data. Data is made useful by data collection, data organization, and it is finally processed through data analysis. Data handling is the process that comprises of data collection, data organization, data analysis and finally its depiction with the help of graphs or charts. More critical than organizing data is the need to know what for the data is being collected. Earlier it was mentioned that for data to be useful to us, it has to be presented in an organized and a contextual manner! So the importance of organization of data cannot be understated! Introduction to Statistics: Collection of data, presentation of data-tabular form, grouped/ungrouped data, mean, median and mode, etc.