** Using WeBWorK **

I'm attempting to use WeBWorK to permit students to conduct an analysis on empirical data that they collect.  In gateway quizzes, answers from previous questions can be accessed as entries in the inputs_ref hash.  Unfortunately, inputs_ref does not appear to retain such information in homework type assignments. My naive understanding is that gateway quizzes are not a simple concatenation of all the problems in a given assignment. If this is the case, perhaps there is hope for using inputs_ref to transmit this information in a homework environment?   I would appreciate any insight on this.

Below are a couple linked problems that demonstrate the principle.

Problem 1

DOCUMENT();

loadMacros(
"PGstandard.pl",
"MathObjects.pl"
);

$nsamples=5;
$dum=Real(1);  #For answer checker syntax
install_problem_grader(~~&std_problem_grader);  #Diable partial credit

$spc="\(\hspace{0.5em}\)";

BEGIN_TEXT
Weigh five pennies individually and enter the mass of each in the table below.
$BCENTER
$BR

\{
begintable(2) .
row("$spc Penny$spc",
    "$spc Mass (g)$spc") .
row( "1", ans_rule(5)) .
row( "2", ans_rule(5)) .
row( "4", ans_rule(5)) .
row( "4", ans_rule(5)) .
row( "5", ans_rule(5)) .

endtable();
\}

$ECENTER $BR

END_TEXT

for(my $i=0;$i<$nsamples;$i++){
  ANS( $dum->cmp(
      checker => sub {return 1;}
   ) );
  }

ENDDOCUMENT();

Problem 2