For the first chart in Figure 9.5 that plots all X, Grouping variables on the x-axis, the percent Agreement is calculated as follows:
For the second chart in Figure 9.5 that plots all Y, Response variables on the x-axis, the percent Agreement is calculated as follows:
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n = number of parts (grouping variables)
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m = number of raters
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k = number of levels
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Ni = m x ri. Number of ratings on part i (i = 1,...,n). This includes responses for all raters, and repeat ratings on a part. For example, if part i is measured 3 times by each of 3 raters, then Ni is 3 x 3 = 9.
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and