weighted average of measurements with unequal errors weighted average of measurements with unequal errors weighted average of measurements without unequal error weighted average of measurement with unequal errors weighted average of measurements with unequal errors weighted average for measurement with unequal errors weighted average with unequal weighted average of measurements with unequal errors can you measure the weighted average by an unequal error weighted average of measurement with unequal errors weighted average of measurement weighted average of measurements with unequal errors weighted average of unequal errors weighted average for unequal values weighted average of unequal errors weighted average of unequal errors weighted average of unequal errors weighted average of measures with unequal errors how to use unequal error in a weighted average weighted average of unequal errors