Keyword Analysis & Research: when should you use an oxford comma

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when should you use an oxford comma	1.63	0.9	6389	41	35
when	0.3	0.3	2822	22	4
should	1.59	0.1	8602	84	6
you	1.17	0.2	8314	25	3
use	0.43	0.8	4207	12	3
an	0.05	0.3	825	59	2
oxford	1.88	0.2	4066	82	6
comma	0.9	0.3	4268	68	5

Keyword	CPC	PCC	Volume	Score
when should you use an oxford comma	0.37	0.6	7625	21
should i use the oxford comma	1.79	0.9	4424	57
should you use the oxford comma	1.3	0.1	4175	9
should writers use the oxford comma	0.17	0.8	188	37
should i use oxford comma on resume	0.86	0.2	4458	97