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Activity- statistics problems (view source)
Revision as of 13:35, 10 July 2014
, 13:35, 10 July 2014→Solution
==Solution==
==Solution==
<math>\frac{\sum x}{n}=\bar x </math> <br>
<math>\frac{\sum x}{n}=\bar x </math> <br>
<math>\sum {x} ={\bar x \times {n}} </math> <br>
<math>\sum {x} ={\bar x \times {n}} </math> <br>
<math>\sum {x} ={12 \times {10}} </math> <br>
<math>\sum {x} =120 </math> <br>