Keyword Analysis & Research: which of these defines validity

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
which of these defines validity	0.8	0.7	4661	94	31
which	1.86	0.3	1053	72	5
of	0.4	0.8	9365	77	2
these	0.9	0.8	2643	59	5
defines	0.18	0.9	9899	46	7
validity	0.77	0.1	1411	21	8

Keyword	CPC	PCC	Volume	Score
which of these defines validity	1.72	0.2	2590	3
what is the concept of validity	0.12	0.1	9753	16
concept of validity in research	0.71	0.8	8017	100
concept validity	1.19	0.3	6642	30
concept validation meaning	0.4	0.2	1792	29
concept validiteit	1.74	1	9900	69
concept validation questions	0.01	0.8	1009	54