Concise Selina Solutions for Class 8 maths Chapter 22 Data Handling


To shorten the time it takes for creating the Census, in 1890, Herman Hollerith invented the "Tabulating Machine". This machine was capable of systematically processing data recorded on punch cards. Thanks to the Tabulating Machine, the 1890 census finished in only 18 months and on a much smaller budget. Data handling is the process of ensuring that research data is stored, archived or disposed off safely and securely during and after the conclusion of a research project. It includes the development of policies and procedures to manage data handled electronically as well as through non-electronic means. Data Handling is also sometimes known as statistics, and you will often come across it in the study of both Maths and Science. They are analysing data to conclude. For data to be meaningful and useful, the items of data must be gathered or captured and recorded systematically. It is referred to as data handling. Data handling may be as simple as orderly recording on a sheet of paper or the completion of entry forms on a computer screen.