R. M. Pickett, "Sensory Evaluation: Potentials for Precision and More General Application in Science and Technology," Sensory Evaluation of Appearance of Materials: a symposium sponsored by ASTM Committee E-12 on Appearance of Materials, and Committee E-18 on Sensory Evaluation of Materials and Products, 1973, American Society for Testing and Materials, Philadelphia

FIG. 4—EVIDENCE OF VALIDITY OF SENSORY EVALUATION OF THE OVERALL APPEARANCE OF PAP SMEARS.

Shown is the grand mean rating for each diagnostic category. Each point is based on 1800 independent ratings. The length of the dashed lines indicates the range of variability (two standard deviatios) for individual smears.