Hi,

this belongs in the statistics section

If You are going to do these types of problems

You either need a very good calculator or spreadsheet

	x	x - 6.71	(x-6.71)^2

	1	-3.86	14.8996

	3	-1.86	3.4596

	4	-0.86	0.7396

	5	0.14	       0.0196

	6	1.14	       1.2996

	7	2.14	       4.5796

	8	3.14	       9.8596

sum	34		      34.8572

sum/7 is 6.71	       sum/6	5.809533333  0r 5.81 is the variance

 

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