I have a 2-level regression with no between-level covariate. My problem is what I shouzld enter in the BETWEEN statement (marked as BETWEEN = ? in the following command). Any help? Thank you very much!
TITLE: Two-level regression analysis
DATA: FILE IS d:test2.dat; VARIABLE: NAMES ARE class degree rawscore; WITHIN = degree; BETWEEN = ?; CLUSTER = class; CENTERING = GRANDMEAN (degree);
ANALYSIS: TYPE = TWOLEVEL RANDOM;
MODEL: %WITHIN% s | rawscore ON degree; %BETWEEN% rawscore;