Keyword Analysis & Research: what does i couldn't agree more mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does i couldn't agree more mean	1.4	0.8	6400	73	36
what	0.59	0.5	4491	86	4
does	0.05	0.7	4415	71	4
i	1.62	0.1	8519	80	1
couldn't	1.18	0.5	9525	70	8
agree	0.36	0.1	4882	83	5
more	1.9	0.4	2396	51	4
mean	0.7	0.4	9660	78	4

Keyword	CPC	PCC	Volume	Score
what does i couldn't agree more mean	0.34	1	1763	18