Keyword Analysis & Research: what is the rule for rounding off numbers

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is the rule for rounding off numbers	0.12	0.7	3463	43	41
what	1.59	0.7	6201	54	4
is	0.51	0.3	6827	8	2
the	0.79	0.4	8841	65	3
rule	0.33	0.5	2659	46	4
for	0.06	0.4	443	86	3
rounding	1.8	0.9	3262	55	8
off	0.58	0.3	3868	48	3
numbers	1.79	1	9890	89	7

Keyword	CPC	PCC	Volume	Score
what is the rule for rounding off numbers	0.29	0.1	9261	68