sum does not work in excel

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
sum does not work in excel	0.1	0.8	7094	95	26
sum	0.19	0.4	4501	30	3
does	1.51	0.2	7807	6	4
not	0.28	0.5	5162	4	3
work	0.75	0.3	3674	8	4
in	0.23	0.9	2715	100	2
excel	1.89	0.3	6912	19	5

Keyword	CPC	PCC	Volume	Score
sum does not work in excel	1.47	0.5	7475	26
sum doesn't work in excel	0.75	0.7	4708	24
why does sum not work in excel	1.65	0.5	6139	79
why does sum function in excel not work	0.49	0.4	2089	96
sum formula does not work in excel	0.14	0.2	7198	74
sum will not work in excel	1.94	1	466	44
excel sum function does not work	0.73	0.3	119	16
why doesn't sum work in excel	0.64	0.7	1186	48
why doesn't my sum formula work in excel	1.07	1	2656	54
sum function doesn't work in excel gives 0	0.33	0.3	1541	30
why doesn't the sum function work in excel	1	0.1	2858	48