Keyword Analysis & Research: when did alcatraz become a federal prison

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did alcatraz become a federal prison	1.39	0.4	4713	80	41
when	1.52	0.2	8458	87	4
did	1.48	0.8	4709	45	3
alcatraz	0.98	0.6	2261	25	8
become	1.55	0.3	654	6	6
a	1.09	0.8	6123	57	1
federal	0.47	0.5	6722	85	7
prison	1.93	0.5	9000	4	6

Keyword	CPC	PCC	Volume	Score
when did alcatraz become a federal prison	1.25	0.1	3608	85