Keyword Analysis & Research: when was the ancient chinese compass invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the ancient chinese compass invented	0.29	0.7	8843	67	45
when	1.57	0.2	6851	5	4
was	0.32	0.3	6036	43	3
the	1.32	0.8	3887	65	3
ancient	0.68	1	7488	45	7
chinese	1.09	0.4	9562	2	7
compass	1.1	0.2	761	20	7
invented	1.77	0.2	5606	82	8

Keyword	CPC	PCC	Volume	Score
when was the ancient chinese compass invented	1.1	1	4832	79