Keyword Analysis & Research: what does the star mean at cost per click

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does the star mean at cost per click	0.01	0.4	5746	78	41
what	1.6	0.7	502	8	4
does	0.92	1	9027	23	4
the	1.93	0.1	9442	21	3
star	0.96	0.1	7958	63	4
mean	0.8	0.8	9012	87	4
at	1.35	0.7	1130	70	2
cost	0.28	1	3280	22	4
per	0.52	0.9	2159	10	3
click	0.97	0.5	6894	57	5

Keyword	CPC	PCC	Volume	Score
what does the star mean at cost per click	1.14	0.1	7753	78