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<p> </p> <div align="center"> <table style="background-color: #ffffcc; background-image: url('http://lcmates.eu/none'); color: #660066; border-color: #003300; border-width: 4px; float: none; text-align: left; vertical-align: top; border-style: solid; width: 400px;" border="4" frame="void" rules="none"> <tbody> <tr align="center"> <td style="background-color: #003300; background-image: url('http://lcmates.eu/none'); color: #ff9900; text-align: center; vertical-align: middle; border-style: none; width: 100%; border-color: #003300; border-width: 1px;" valign="top"><span style="font-size: large; color: #ffff99;">Desviació típica</span></td> </tr> <tr> <td valign="top" width="NaNpx"> <div align="justify"><strong><span style="font-size: small; color: #003300;">La variància és la mitjana dels quadrats de les desviacions i es calcula amb</span></strong></div> <div align="center"><strong><span class="nolink" style="font-size: small; color: #003300;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup mathcolor=¨#003300¨»«mi mathcolor=¨#003300¨»§#963;«/mi»«mn»2«/mn»«/msup»«mo mathcolor=¨#003300¨»§#160;«/mo»«mo mathcolor=¨#003300¨»=«/mo»«mo mathcolor=¨#003300¨»§#160;«/mo»«munderover mathcolor=¨#003300¨»«mrow»«mo»§#8721;«/mo»«mo»(«/mo»«/mrow»«mrow»«mi mathvariant=¨bold¨»i«/mi»«mo»=«/mo»«mn»1«/mn»«/mrow»«mi mathvariant=¨bold¨»j«/mi»«/munderover»«mover mathcolor=¨#003300¨»«mi mathvariant=¨bold¨»x«/mi»«mo»§#175;«/mo»«/mover»«mo mathcolor=¨#003300¨»-«/mo»«msub mathcolor=¨#003300¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»x«/mi»«mi mathvariant=¨bold¨»i«/mi»«/msub»«msup mathcolor=¨#003300¨»«mo»)«/mo»«mn»2«/mn»«/msup»«mo mathcolor=¨#003300¨»§#183;«/mo»«msub mathcolor=¨#003300¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»f«/mi»«mi mathvariant=¨bold¨»i«/mi»«/msub»«/math»</span></strong><br /><br /> <div align="justify"><strong><span style="font-size: small; color: #003300;">La desviació típica és l'arrel de la variància:</span></strong><br /> <div align="center"><strong><span class="nolink" style="font-size: small; color: #003300;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi mathcolor=¨#003300¨»§#963;«/mi»«mo mathcolor=¨#003300¨»§#160;«/mo»«mo mathcolor=¨#003300¨»=«/mo»«mo mathcolor=¨#003300¨»§#160;«/mo»«msqrt mathcolor=¨#003300¨»«munderover»«mo»§#8721;«/mo»«mrow»«mi»i«/mi»«mo»=«/mo»«mn»1«/mn»«/mrow»«mi»j«/mi»«/munderover»«mo»(«/mo»«mover»«mi»x«/mi»«mo»§#175;«/mo»«/mover»«mo»-«/mo»«msub»«mi»x«/mi»«mi»i«/mi»«/msub»«msup»«mo»)«/mo»«mn»2«/mn»«/msup»«mo»§#183;«/mo»«msub»«mi»f«/mi»«mi»i«/mi»«/msub»«/msqrt»«/math»</span></strong></div> </div> </div> </td> </tr> </tbody> </table> </div>
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