investigate [Verb] + complaint [Noun]

Strength Strength Dispersion
A:
77
CHISQ:
2,931.75
AWT:
2,235,277
TTEST:
8.56
G2:
427.68
FAWT:
24.32
MI:
5.32
LOGLOG:
33.36
JD:
0.83
MI3:
17.86
DICE:
1.59
RANGE: