Keyword Analysis & Research: what is the standard deviation function in r

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is the standard deviation function in r	0.61	0.1	3294	13	44
what	1.65	0.8	6967	69	4
is	1.32	0.8	9471	1	2
the	0.77	0.1	5395	78	3
standard	0.91	0.5	8120	67	8
deviation	1.92	0.2	5430	52	9
function	0.85	0.1	3251	24	8
in	0.88	0.5	8437	32	2
r	1.64	1	7258	77	1

Keyword	CPC	PCC	Volume	Score
what is the standard deviation function in r	0.25	0.3	924	10