Keyword Analysis & Research: stata cannot specify both keep and drop

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
stata cannot specify both keep and drop	1.27	0.4	6280	87	39
stata	0.2	0.4	8202	69	5
cannot	0.37	0.9	5545	94	6
specify	0.19	0.5	7379	37	7
both	0.41	0.7	9293	34	4
keep	1.96	0.2	3455	70	4
and	0.1	0.8	8763	1	3
drop	1.97	0.8	8619	41	4

Keyword	CPC	PCC	Volume	Score
stata cannot specify both keep and drop	0.86	0.9	9566	71