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International Journal of STEM Education

Table 6 Inter-rater agreement indexes between two coders

From: Development of Two-Dimensional Classroom Discourse Analysis Tool (CDAT): scientific reasoning and dialog patterns in the secondary science classes

Agreement statistic

First step coding

Second step coding

Recommended acceptable range

Intra-class correlation

.81

.78

.90–70

% Absolute agreement

94.6%

76.3%

90–75%

Cohen’s Kappa

.93

.70

.81–.61

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