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Data and Information

Data Processing (secondary)

DATA AND INFORMATION

Data are raw, unorganized or unprocessed facts that need to be processed. Data can be something simple and seemingly random and useless until it is organised. TYPES OF DATA Qualitative data  i.e descriptive information Quantitative data  i.e  numeric information   SUBDIVISION OF QUANTITATIVE DATA Continuous data: this can take any value. It is also known as measured data. It can take value within a range e.g  0-99, 10-20 etc. Discrete data: this type of data is whole in nature. It is not continuous. It takes a whole numbers and also called Counted data.   FORMS OF DATA Numeric  i. e  0-9 Letters  i.e  a-z or A-Z Symbols  e.g   + , _ , * , % , = , <, >, etc   EXAMPLES OF DATA Numbers, name of thing, place or animal, words, measurements, observations, descriptions of things etc.   SOURCES OF DATA Data can come from different sources depending… Read More »DATA AND INFORMATION

Computer-Studies

Data and Information

MEANING OF DATA Raw facts or entity which no meaning has been attached to because it has not been processed is referred to as DATA. Data could be facts about people, places, things and their activities. When data passes through some manipulation activities in order to organize them to be meaningful or to achieve a desired result it is said to be processed the result of the processed data is called INFORMATION.   TYPES OF DATA Data can take any of these forms Symbols Alphanumeric Alphabet Numeric Data can be gathered counting: using counters Observation of people, activities ,transactions or event Questioner Face to face interviews Form filling.   INFORMATION Information can be defined as any piece of fact, data or news discovered, heard or communicated to anyone verbally, or through writing or through other useful means.   DIFFRENCE BETWEEN DATA AND INFORMATION People who conduct market research surveys might… Read More »Data and Information

Computer-Studies

DATA AND INFORMATION

DATA AND INFORMATION WHAT ARE DATA AND INFORMATION? Data are raw facts. This means that when facts are collected about people, places, items, and events, animal and so on, data is obtained. Therefore data can be said to be the raw materials for producing information. Information is referred to as processed data, i.e. data that has gone through processing.   TYPES OF DATA Numeric: made up of only numbers e.g. 2013. Alphanumeric: made up of letters and numbers e.g. S.S.1A Pictorial: pictures, charts, drawings, videos, etc. Symbolic: Made up of special characters e.g. ;,:,<,>, etc. Boolean/Decision: in form of yes or no, True or False, 1 or 0.   WHAT IS DATA PROCESSING? Data processing is the conversion of DATA to INFORMATION.    DATA    →     PROCCESSING     →     INFORMATION   ILLUSTRATION Given that A = 3 and B = 7 {3 and 7 are data representing letters A and B}. Evaluate.… Read More »DATA AND INFORMATION

Computer-Studies

DATA AND INFORMATION

DATA AND INFORMATION What is data? Data refers to raw facts yet to be processed. It is a fact, number or text that can be processed by a computer. Data has no meaning to the user unless processed to get meaningful information.   Source of data Data can be obtained by any one or more of the following methods. Counting Observation of people, activities or event Questionnaires result Face to face interviews Form filling Test or examination scores, etc.   Types of data Data can be classified based on the types of characters or symbols it contains. Based on this, there are four types of data. Numeric data Alphabetic data Alpha numeric data Symbolic data i) Numeric data: This consist of combination of numbers (0 – 9) only. Examples are 12, 340.23, 3567, 3, etc. ii) Alphabetic data: This consists of letter of alphabets (A – Z or a –… Read More »DATA AND INFORMATION

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