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Home > Library > TDT Readings > Statistics > tdt_S_whatistypical.pdf

# What is 'typical' for different kinds of data?

The purpose of this article is to present and discuss in a down-to-earth fashion, with authentic data sets, the two types of data and the relationship between the three measures of typicality 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 that both struggle.