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# Module 3

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levels of measurement
uses and application of statistics

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### Module 3

1. 1. Basic Statistics 2011Module 3  Levels of Measurement  Uses and Applications of StatisticsObjectives: At the end of the module, the students are expected to: 1. Identify the level of measurement the data belong. 2. Realize the uses and application of Statistics in real life.Levels of Measurement 1. NOMINAL LEVEL – characterized by data that consists of names, labels, or categories only. In this level, we can only say that one object is different from another, but the amount of difference between them cannot be determined. Example: Survey responses of yes, no, and undecided Genders of students in the Statistics class School Clubs where each SciTech student belongs 2. ORDINAL LEVEL – involves data that may be arranged in some order or rank. Difference between data values cannot be determined or are meaningless. Example: Shirt sizes of S, M, or L Honor ranks of students: 1st, 2nd, and 3rd Grading system involving letters (A, B, C, D, and F) 3. INTERVAL LEVEL – involves data where amount of difference between figures can be determined. Data at this level may lack an inherent zero starting point. Example: Temperature 4. RATIO LEVEL - absolute zero value is meaningful. Example: Area, height, weight Read more on: http://www.socialresearchmethods.net/kb/measlevl.php SRSTHS 1