Weighted Grader

This shows how to use intervals in a problem.

Complete Code

PG problem file

Explanation

DOCUMENT();
loadMacros('PGstandard.pl', 'PGML.pl', 'PGcourse.pl');

Preamble

These standard macros need to be loaded.

Setup

This perl code sets up the problem.

BEGIN_PGML
* This answer is worth 20%. Enter 1: [___]{1}{ cmp_options => { weight => 20 } }

* This answer is worth 50%. Enter 3: [___]{3}{ cmp_options => { weight => 50 } }

* This answer is worth 30%. Enter 7: [___]{7}{ cmp_options => { weight => 30 } }
END_PGML

Statement

The default avg_problem_grader allows answers to be assigned weights, i.e., given precedence in the problem score when the problem is graded. Assign weights to answers by passing the weight via cmp_options. The example here gives weights as percents that sum to 100, but weights of (2, 5, 3), (4, 10, 6), or (0.2, 0.5, 0.3) would give the same weighting.

Note that if an answer is created as a MathObject in the problem setup, then the weight can also be assigned by passing the weight option to the cmp method directly as in $ans->cmp(weight => 20).

BEGIN_PGML_SOLUTION
Solution explanation goes here.
END_PGML_SOLUTION

ENDDOCUMENT();

Solution

A solution should be provided here.