mean_to_d {MAd}

Means to Standardized Mean Difference

Description

Converts raw mean scores reported in the primary study to a standardized mean difference (d).

Usage

mean_to_d(m.1, m.2, sd.1, sd.2, n.1, n.2)

Arguments

m.1

Mean of group one.

m.2

Mean of group two.

sd.1

Standard deviation of group one.

sd.2

Standard deviation of group two.

n.1

Sample size of group one.

n.2

Sample size of group two.

Value

d

Standardized mean difference (d).

var.d

Variance of d.

Author(s)

AC Del Re & William T. Hoyt

Maintainer: AC Del Re [e-mail]

References

Borenstein (2009). Effect sizes for continuous data. In H. Cooper, L. V. Hedges, & J. C. Valentine (Eds.), The handbook of research synthesis and meta analysis (pp. 279-293). New York: Russell Sage Foundation.

See Also

d_to_g, mean_to_d2, t_to_d, f_to_d, p_to_d1, p_to_d2, ancova_to_d1, ancova_to_d2, tt.ancova_to_d, f.ancova_to_d, r_to_d, p.ancova_to_d1, p.ancova_to_d2, lor_to_d, prop_to_or, prop_to_d, r_from_chi, r_from_d, r_from_d1, r_from_t