Chi-square test comparing the frequency of observations below the reference phase trimmed mean in any two phases.
trimbelow(behavior, phaseX, v1, v2)
behavior variable
phase variable
first phase letter in quotation marks (e.g., "A")
second phase letter in quotation marks (e.g., "B")
Charles Auerbach, PhD Wurzweiler School of Social Work Wendy Zeitlin, PhD Montclair State University
Auerbach, Charles, and Zeitlin Wendy. SSD for R: An R Package for Analyzing Single-Subject Data. Oxford University Press, 2014. p84, p145
Go to www.ssdanalysis.com for more information
cry<-c(3, 4, 2, 5, 3, 4, NA, 2, 2, 3, 2, 1, 2, NA, 2, 2, 1, 2, 1, 0, 0, 0)
pcry<-c("A", "A", "A", "A", "A", "A", NA, "B", "B", "B", "B", "B", "B",
NA, "B1", "B1", "B1", "B1", "B1", "B1", "B1", "B1")
trimbelow(cry,pcry,"A","B")
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