Dataset:  medium_reading.csv

Source: C. O'Keeffe and R. Wiseman (2005). "Testing Alleged Mediumship: Methods and Results,"
British Journal of Psychology, Vol. 165-179.

Description: Results of experiment where 5 mediums (treatments) gave readings on 5
sitters in 5 session in a latin square design.
Responses: Number of Statements (Medium reading sitter) and Average Rating (Sitter evaluating mediums)
Note that Average Rating should not include Session as Factor and can be RBD.

Variables:
session   (1-5)
medium (1-5)
sitter (1-5) 
statements  (count)
rating (Average rating of medium by sitter across sessions on 1-7 Likert scale)