when were tests invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when were tests invented	0.25	0.2	2219	97	24
when	1.36	0.5	1548	87	4
were	0.42	0.4	3906	84	4
tests	0.25	0.4	7076	34	5
invented	1.45	0.4	439	41	8

Keyword	CPC	PCC	Volume	Score
when were tests invented	0.91	0.7	182	62
when were texts invented	1.69	0.6	6404	2
when were pregnancy tests invented	1.83	0.2	8721	9
when were paternity tests invented	1.07	0.4	906	78
when were dna tests invented	0.68	0.2	6851	63
when were iq tests invented	1.04	1	8049	56
when were blood tests invented	0.51	0.3	1517	8
when were home pregnancy tests invented	1.22	0.1	4106	99
when were drug tests invented	1.39	0.3	2971	51
when were text messages invented	1.44	0.1	9184	59
when were text capable phones invented	1.14	0.8	5588	66
when was texting invented	0.51	1	7415	75
what year was texting invented	0.02	0.8	3828	73
when was text messaging invented	1.51	0.7	9584	97
when was texting created	0.25	1	9007	48
when was texting introduced	1.66	0.2	3325	26
when was text message created	1.47	0.5	6530	10
when did texting begin	0.26	0.6	6549	38
when was text to speech invented	1.48	0.2	1673	30
when did text messages start	0.59	0.9	7271	55
history of text messages	0.87	0.6	3101	71
when was the first text sent	1.42	0.6	9685	87
when did texting start	0.53	0.6	3355	40
when did texting first come out	1.84	0.9	2732	31
when did text messaging begin	0.58	1	5724	77
when was the first text message	1.1	1	2773	70
when was text messaging introduced	1.95	0.9	3441	47
when did text messaging start	1.84	0.1	8587	93
history of text messaging	1.7	0.3	7650	44
what year did texting begin	1.58	0.7	7995	8
first written text in history	1.48	0.1	5445	6
what year did texting start	1.5	0.6	6096	68