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Activity- statistics problems (view source)
Revision as of 14:46, 10 July 2014
, 14:46, 10 July 2014→Solution
<math>\sum {x} =120 </math> <br>
<math>\sum {x} =120 </math> <br>
σ=<math>\sqrt{\frac{\sum {x^2}}{n}}-{\frac{({\sum{x}{n})^{2}}}</math>
σ=<math>\sqrt{\frac{\sum {x^2}}{n}}-{\frac{({\sum{x}{n})^{2}}}</math> <br>