210 likes | 558 Vues
Attributes of Information. Examples. Overview. Information Systems help companies achieve their goals. How do they do it? By processing raw data into information IS can add value to information by enhancing the attributes (11 of them). 11 Attributes of Information. Usability. Delivery.
E N D
Attributes of Information Examples
Overview Information Systems help companies achieve their goals. How do they do it? By processing raw data into information IS can add value to information by enhancing the attributes (11 of them).
11 Attributes of Information Usability Delivery Quality • Accurate • Verifiable • Complete • Reliable Relevant Simple Flexible Economical Timely Accessible Secure
Information Spectrum • Data processing Information • Information intelligence Knowledge • Knowledge experience Wisdom
Often confused • My calculator always does multiplication correctly in never makes an error. My calculator is __________ • What attribute is described? • However, I dropped it in the sink and sometimes it won’t turn on. • My calculation is not _________ • What attribute is described?
Accuracy vs. Reliability • Accuracy – true, free from error • Precision – refers to the level of accuracy • 1/3 = 1.333 is accurate • 1/3 = 1.333333 is more precise • Reliability – in IS, it refers to how often information is accurate. • An information source could be error free but might not work all the time.
Weather Forecasting • Are weather-persons • reliable, • accurate, • both, or • neither?
Accurate vs. Reliable • Weatherman Acan predict tomorrows temperature to the exact degree • but only 40% of the time. • other 60% he cannot interpret the raw data • Weatherman Bcan predict tomorrows temperaturebut it may be off by 5 degrees • But, his system works 95% of the time • Who is more accurate? • Who is more reliable?
TPS – transaction processing system • I put the TPS reports on the website so everyone can access them. • This makes the TPS reports more ________. • The TPS reports are PDF files which cannot be modifed easily, so we also provide the TPS data in standard XML format which can be converted to any other format. • The XML format is more ___________.
Some attributes are enemies! My student evaluation report includes 23 answers from all 31 students. Its hard for me to tell if my evaluations are good or bad, but at least the data is __________. The student evaluation report includes only my average score, which is very _______ and easy to interpret, but I’d like all the data.
Examples Stories Water Testing GE PCB Dredging 1930’s stock tips
Fun Article http://www.walletpop.com/2010/12/29/disney-world-unveils-plans-to-reduce-wait-time/