Introduction to data representation pdf

Data analysis is the process of bringing order, structure and meaning to the mass of collected data. Introduction to computer data representation introduces readers to the representation of data within computers. Introduction to statistics and data analysis springerlink. Functionality, computers could be analog, digital or hybrid. It is a messy, ambiguous, timeconsuming, creative, and fascinating process. In this lecture well see our type system in action. Introduction to computer data representation volume 1 bentham. Data representation introduction to unit 3 in this unit you will look at different ways to represent data in tables, charts, graphs and diagrams.

It represents the maximum capacity of data in the device. The frequencies, along the vertical axis, are placed against the lines not the spaces. The discrete value or category is placed at the centre of the bar. Qualitative data analysis is a search for general statements about relationships among categories of data. Data analytics 7memory size and data size memory size is a measure of memory storage capacity in bytes. Given this flask, assume the red liquid is data and each mark represents 100 mb of data. The theory given in this chapter seems purely related and dependant on mathematical and statistical definitions, but it is quite relevant to the. The emphasis is not on the techniques to produce these representations, but on the question of whether or not the representation best. Computer basics, representation of characters in computers. Data 301 introduction to data analytics data representation. Starting from basic principles of number representation in computers, the book covers the representation of both integer and floating point numbers, and characters or text. In particular we will see how types enable and guide data representation.

Internal data representation, shimon schocken, idc herzliya, slide 6. Chapter 4 binary data representation and binary arithmetic calgary. Representation models introduction to data science. Thinking abstractly of data structure, beyond a specific implementation, makes it easier to share data across programs and systems, and integrate data from different sources. An introduction to data representation synthesis stanford cs. Computers are classified according to functionality, physical size and purpose. It comprehensively explains the main techniques of computer arithmetic and logical manipulation. Unit 3 data representation59 in a bar graph or barline graph the height of the bar or line is proportional to the frequency. Introduction to computer data representation volume 1.

We first introduce the relation abstraction via which data structure clients manipulate synthesized data representations. Bars are to be drawn separated equally, with same width. Chapter 1 data representation techniques shodhganga. Computer is an electronic device, which accepts data, processes it and outputs the results in the form of reports.