piecemeal [Adjective] + improvement [Noun]

Strength Strength Dispersion
A:
3
CHISQ:
30.56
AWT:
29,461,913
TTEST:
1.59
G2:
14.73
FAWT:
1.85
MI:
3.6
LOGLOG:
5.7
JD:
0.25
MI3:
6.77
DICE:
0.09
RANGE: