indexVariability: Calculate 'variability' of a grid as defined by Slater (1977).
Description
Variability records a tendency for the responses to gravitate
towards both end of the gradings scale. (Slater, 1977, p.88).
Usage
indexVariability(x, min = NULL, max = NULL, digits = 2)
Arguments
- x
repgrid
object.
- min, max
Minimum and maximum grid scale values. Nor needed
if they are set for the grid.
- digits
Numeric. Number of digits to round to (default is
2
).
References
Slater, P. (1977). The measurement of intrapersonal space
by Grid technique. London: Wiley.