The Barbados Yachting Association
Results
\n"; $i++ endwhile; mysql_FreeResult($result); echo "
\n"; $query = "select race,class,sum(elapsed) as sx,sum(elapsed * elapsed) as ssx,"; $query = $query + "count(elapsed) as n from elapsed "; /* $query = $query + "race like" + "'"+ $race_id + "%'"; */ $query = $query + " group by race,class order by class,race"; /* Loop for results */ $result = mysql($database, $query); $num = mysql_numrows($result); if ( $num != 0); echo "
";
     echo "        CLASS   MEAN      STD.DEV     RATIO\n";
     $i=0;
     while ($i < $num);
      $RACE  = mysql_result($result,$i,"Race");
      $CLASS = mysql_result($result,$i,"Class");
      $SX    = mysql_result($result,$i,"sx");
      $SSX   = mysql_result($result,$i,"ssx");
      $N     = mysql_result($result,$i,"n");
      $MEAN  = $SX / $N;
      $VAR   = ($SSX - $N*$MEAN*$MEAN)/($N-1);
      $STDEV = SQRT($VAR);
      $RATIO = 100.0*($STDEV/$MEAN );
      echo "$RACE        $CLASS     ";
      echo "%6.2f" $MEAN;
      echo "     ";
      echo "%6.2f" $STDEV;
      echo "     ";
      echo "%6.2f" $RATIO;
      echo "
"; $i++ endwhile; mysql_FreeResult($result); endif; echo "
"; > Return to database input form
Return to database home page
"; endif; >