piecemeal [Adjective] + improvement [Noun]

Strength Strength Dispersion
A:
4
CHISQ:
133.72
AWT:
28,443,578
TTEST:
1.94
G2:
28.14
FAWT:
1.91
MI:
5.14
LOGLOG:
10.29
JD:
0.39
MI3:
9.14
DICE:
0.12
RANGE: