SSDforR (version 1.1)

ABttest: T-test comparing phases

Description

Computes t-test comparing any twp phases selected by user. Bar graph displaying means for each phase is displayed in the graph window.

Usage

ABttest(behavior, phaseX, v1, v2)

Arguments

behavior

behavior variable

phaseX

phase variable

v1

letter of first phase (e.g., "A")

v2

letter of second phase (e.g., "B")

References

{Auerbach, C. & Schudrich, W. Z. (2013). SSD for R A Comprehensive Statistical Package to Analyze Single-System Data. Research on Social Work Practice, 23(3), 346-353. doi:10.1177/104973153477213

} {Go to www.ssdanalysis.com for more information.}

Examples

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")
ABttest(cry,pcry,"A","B")