Well-known examples include studies of stature height, whose midparent value  is given by:   1 where hf and hm are, respectively, the father's and mother's heights. The coefficient 1.08 serves as a scaling factor. After the 1.08 scaling, the mean of the mother's height is the same as that of the father's, and the variance is closer to the father's; in this way, sex difference can be ignored. References Vogel, F. Motulsky, A. G. (1997) Human Genetics: Problems and Approaches. Springer, 878, P207.
Well-known examples include studies of stature height, whose midparent value hmp is given by: Vogel, F. Motulsky, A. G. (1997) Human Genetics: Problems and Approaches. Springer, 878, P207. where hf and hm are, respectively, the father's and mother's heights. The coefficient 1.08 serves as a scaling factor. After the 1.08 scaling, the mean of the mother's height is the same as that of the father's, and the variance is closer to the father's; in this way, sex difference can be ignored. References 
A
hmp
A
Vogel, F.
A
Motulsky, A. G. (1997) Human Genetics: Problems and Approaches. Springer, 878, P207.
D
1
D
Vogel, F.
D
Motulsky, A. G. (1997) Human Genetics: Problems and Approaches. Springer, 878, P207.