transformHgtoZr function

transformHgtoZr

The functions transforms a vector of Hedges g values to their normal approximation of point bi-serial values.

transformHgtoZr(g, Nc, Nt)

Arguments

• g: value of Hedges' g
• Nc: the number of observations (participants) in the first (control) group
• Nt: the number of observations (participants) in the second (treatment) group

Returns

value of normal approximation of point biserial r

Examples

transformHgtoZr(0.5, 20, 20)
# [1] 0.2474665

Author(s)

Barbara Kitchenham and Lech Madeyski