lie detector invented 1921

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
lie detector invented 1921	0.85	0.5	2224	70	26
lie	1.9	0.8	790	17	3
detector	1.07	0.2	5934	12	8
invented	0.76	0.6	3969	78	8
1921	0.94	0.8	3418	76	4

Keyword	CPC	PCC	Volume	Score
lie detector invented 1921	0.94	0.3	8524	13
invention of the lie detector	0.37	0.7	1627	21
history of the lie detector	1.68	0.7	2786	1
inventor of the lie detector	0.15	0.8	2590	48
who invented the lie detector machine	1.67	0.7	970	72
who invented the lie detector test	1.67	0.7	2828	39
when was the lie detector created	1.64	0.3	8220	10
why was the lie detector invented	0.43	0.7	207	47
who created the lie detector	1.26	0.3	7482	71
when was the first lie detector built	1.76	0.4	6834	40
inventor of lie detector test	1.48	0.7	561	16
old lie detector in history	0.7	0.2	1703	59
who made the lie detector	0.65	0.1	7696	45
who created the lie detector test	1.83	0.5	993	70
history of lie detection	1.78	0.9	8303	62