The auther tries to estimate age of a man from his answers to several questions in a social survey using the method of Hayashi's Quantification I. Two data, Research Japanese National Character(1978)[3]and Survey of Ordinary Life(1976, 1978)[2], were used. The computation was done for male and for female separately. Multiple correlation coefficients were 0.64(male), 0.70(female)for the former case and 0.57(male), 0.67(female)for the latter case.
