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What is 'typical' for different kinds of data?


Watson, J, What is 'typical' for different kinds of data?, The Australian Mathematics Teacher, 70, (2) pp. 33-40. ISSN 0045-0685 (2014) [Professional, Refereed Article]

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There are five words that are critical to an appreciation of what is ‘typical’ in data sets that students encounter across the middle school years. The first three words—mean, median and mode—are nouns that define measures of typicality in data sets. The next two words—categorical and numerical—are adjectives that describe the types of data sets to which we may wish to apply the measures. The purpose of this article is to present and discuss in a down-to-earth fashion, with authentic data sets, the relationship of the three measures of typicality and the two types of data introduced in the curriculum. Although the mean, median and mode have been in mathematics text books for many years it is sobering to read in the research literature that teachers’ understanding of the measures is little different from that of students and both struggle (Jacobbe & Carvalho, 2011).

Item Details

Item Type:Professional, Refereed Article
Keywords:Average, data sets
Research Division:Education
Research Group:Curriculum and pedagogy
Research Field:Mathematics and numeracy curriculum and pedagogy
Objective Division:Education and Training
Objective Group:Teaching and curriculum
Objective Field:Assessment, development and evaluation of curriculum
UTAS Author:Watson, J (Professor Jane Watson)
ID Code:97524
Year Published:2014
Deposited By:Education
Deposited On:2014-12-19
Last Modified:2015-02-23

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