Keyword Analysis & Research: example of a threat to internal validity

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
example of a threat to internal validity	0.49	0.8	7733	86	40
example	1.26	0.4	3312	53	7
of	1.48	0.1	6356	76	2
a	1.66	0.5	6613	7	1
threat	1.12	0.6	7988	76	6
to	0.02	0.2	4100	54	2
internal	1.86	0.2	5769	44	8
validity	0.88	0.7	8915	91	8

Keyword	CPC	PCC	Volume	Score
example of a threat to internal validity	0.07	0.1	816	27