Keyword Analysis & Research: what is a selection bias

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is a selection bias	0.86	0.9	8498	35	24
what	1.74	0.3	5443	26	4
is	0.92	0.3	4766	100	2
a	0.7	0.1	9993	53	1
selection	0.14	0.4	9974	39	9
bias	0.29	0.4	8418	53	4

Keyword	CPC	PCC	Volume	Score
what is a selection bias	0.59	0.7	4671	6