Informatics Practices · Ch 5 — Understanding Data
Summary
Summary
- Data refer to unorganised facts that can be processed to generate meaningful results or information.
- Data can be structured or unstructured.
- Hard Disk, SSD, CD/DVD, Pen Drive, and Memory Card are some of the commonly used storage devices.
- The Data Processing cycle involves input and storage of data, its processing, and generating output.
- Summarising data using statistical techniques aids in revealing data characteristics.
- Mean, Median, Mode, Range, and Standard Deviation are some of the statistical techniques used for data summarisation.
- Mean is the average of given values.
- Median is the mid value when data are sorted in ascending/descending order.
- Mode is the data value that appears the most number of times. …