Subversion Repositories wimsdev

!read adm/title.phtml 1\

\

Severity levels of worksheets

!set wims_backslash_insmath=yes

!if $wims_user=supervisor

<p>

The server computes two averages for the work of each participant on each

sheet: a percentage of points obtained with respect to the number of points

required, and the quality of points obtained on the exercises of the worksheet.

Let x be the percentage and y the quality, both scaled proportionally

to values between 0 and 1. Here are the formulas for the computation of the

grades.

</p>

!reset table_center

$table_header

$table_hdtr<th>Level</th><th>Formula</th><th>Explanation</th></tr>

$table_tr<td>0</td><td>$scoremax max(x,y)

 </td><td>Very lenient: maximum between percentage and quality.</td></tr>

$table_tr<td>1</td><td>$scoremax x

 </td><td>Quality is not taken into account. You get maximum of grade

 once all the required work is done.</td></tr>

$table_tr<td>2</td><td>$scoremax x y<sup>0.3</sup>

 </td><td>Quality has only slight effect over the grade.

$table_tr<td>3</td><td>$scoremax x y<sup>0.5</sup>

 </td><td>More effect of quality.</td></tr>

$table_tr<td>4</td><td>$scoremax x y

 </td><td>To have a grade of $scoremax, you must gather all required points

  (100%) without making any error (quality=10).</td></tr>

$table_tr<td>5</td><td>$scoremax x<sup>2</sup> y

 </td><td>Unfinished work is over-punished.</td></tr>

$table_tr<td>6</td><td>$scoremax x<sup>2</sup> y<sup>2</sup>

 </td><td>Any mistake is over-punished.</td></tr>

$table_end

Remark : For level 0 and 1, if the quality of points is less than 1 for an

exercise, the percentage of points obtained

become 0% for this exercise when x is computed ; if the quality of points is betwwen 1 and 2,

the percentage of points obtained for this exercise is divided by 2

when x is computed.

!else

Pour cette feuille, votre enseignant a choisi le mode de calcul suivant

de la note.

Pour chacun des indicateurs suivants, on calcule la moyenne pour votre travail pour :

<ul>

<li>

!if $help_sw=0

  le quotient I des points cumulés par le nombre de points demandés 10*n

!endif

!if $help_sw=1

la moyenne I des n meilleures notes,

!endif

!if $help_sw=2

 le minimum I des n meilleures notes

!endif

</li>

<li>

la qualité Q des points obtenus sur les exercices.

</li>

</ul>

Si la note de qualité est inférieure à 1 pour un exercice,

I est mis à 0 pour cet exercice  ;

si la note de qualité est comprise entre 1 et 2,

I est divisé par 2 lors du calcul de la note de la feuille.

</p><p>

Ces moyennes sont ramenées entre 0 et 1 et

 la note de la feuille est calculée comme

\($scoremax * $(list[$help_level+1;]) \)

!endif