Dataset:  halo.dat

Source:  Landy and Sigall (1974). "Beauty is Talent: Task Evaluation
as a Function of the Performer's Physical Attraction," Journal of
Personality and Social Psychology, 29:299-304.

Description: Two Factor experiment to assess if appearance effects
judgment of student's essay. Appearance (Attractive/Control/Unattractive)
and Essay Quality (Good/Poor) are factors (Pictures given with essay, except
in control). Response: Grade on essay (0-25).

Variables/Columns
Essay Quality    1   /* 1=Good, 2=Poor  */
Student Attactiveness   4  /*  1= Attractive, 2=Control, 3=Unattractive  */
Mean Score   7-10
SD of scores   14-17
number of replicates   20-21