invented the hearing aid

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
invented the hearing aid	1.81	0.9	737	22	24
invented	0.11	0.2	9474	9	8
the	1.29	0.6	9187	48	3
hearing	1.59	0.3	4405	3	7
aid	0.73	0.7	2767	66	3

Keyword	CPC	PCC	Volume	Score
invented the hearing aid	0.24	0.9	4414	72
when was the hearing aid invented	0.34	0.2	6798	47
when was the first hearing aid invented	0.42	0.2	4262	36
who invented the first hearing aid	0.59	1	1891	30
the first hearing aid invented	0.2	0.2	4650	76
when was the electric hearing aid invented	1.18	0.5	4805	49
who invented the hearing aids	0.72	0.4	3875	89
hearing aids invented	0.25	0.3	7718	67
who invented the hearing aid	1.72	1	5270	85
advanced hearing aid invented in 1957	0.97	0.4	4269	82