Keyword Analysis & Research: what is sigma symbol in math

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is sigma symbol in math	1.21	0.5	5931	87	28
what	0.95	0.7	4498	77	4
is	0.27	0.5	8513	99	2
sigma	0.61	0.4	5556	81	5
symbol	1.21	0.3	3432	83	6
in	0.96	0.7	6343	24	2
math	0.17	0.8	9616	33	4

Keyword	CPC	PCC	Volume	Score
what is sigma symbol in math	0.25	0.5	5609	55