version 1.63, 2003/03/27 19:29:36
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version 1.68, 2003/04/11 15:14:25
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Line 104 sub get_sequence_assessment_data {
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Line 104 sub get_sequence_assessment_data {
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my $fn=$ENV{'request.course.fn'}; |
my $fn=$ENV{'request.course.fn'}; |
## |
## |
## use navmaps |
## use navmaps |
my $navmap = Apache::lonnavmaps::navmap->new(Apache->request,$fn.".db", |
my $navmap = Apache::lonnavmaps::navmap->new($fn.".db", |
$fn."_parms.db",1,0); |
$fn."_parms.db",1,0); |
if (!defined($navmap)) { |
if (!defined($navmap)) { |
return 'Can not open Coursemap'; |
return 'Can not open Coursemap'; |
Line 1039 sub get_student_data_from_performance_ca
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Line 1039 sub get_student_data_from_performance_ca
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"LEFT JOIN $symb_table AS d ON d.symb_id = a.symb_id ". |
"LEFT JOIN $symb_table AS d ON d.symb_id = a.symb_id ". |
"WHERE student='$student'"; |
"WHERE student='$student'"; |
if (defined($symb) && $symb ne '') { |
if (defined($symb) && $symb ne '') { |
$request .= " AND d.symb='".$dbh->quote($symb)."'"; |
$request .= " AND d.symb=".$dbh->quote($symb); |
} |
} |
} elsif (defined($symb) && $symb ne '') { |
} elsif (defined($symb) && $symb ne '') { |
$request .= "FROM $symb_table as d ". |
$request .= "FROM $symb_table as d ". |
Line 1070 sub get_student_data_from_performance_ca
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Line 1070 sub get_student_data_from_performance_ca
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$studentdata->{$symb}->{$base.'.awarddetail'} = $awarddetail; |
$studentdata->{$symb}->{$base.'.awarddetail'} = $awarddetail; |
$studentdata->{$symb}->{'timestamp'} = $time if (defined($time) && $time ne ''); |
$studentdata->{$symb}->{'timestamp'} = $time if (defined($time) && $time ne ''); |
} |
} |
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if (defined($symb) && $symb ne '') { |
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$studentdata = $studentdata->{$symb}; |
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} |
return $studentdata; |
return $studentdata; |
} |
} |
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Line 1121 sub get_current_state {
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Line 1124 sub get_current_state {
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my ($status,$data) = &ensure_current_data($sname,$sdom,$courseid); |
my ($status,$data) = &ensure_current_data($sname,$sdom,$courseid); |
# |
# |
if (defined($data)) { |
if (defined($data)) { |
return %$data; |
if (defined($symb)) { |
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return %{$data->{$symb}}; |
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} else { |
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return %$data; |
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} |
} elsif ($status eq 'no data') { |
} elsif ($status eq 'no data') { |
return (); |
return (); |
} else { |
} else { |
Line 1150 the students you are concerned with prio
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Line 1157 the students you are concerned with prio
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Inputs: $students, $symb, $part, $courseid |
Inputs: $students, $symb, $part, $courseid |
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=over 4 |
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=item $students is an array of hash references. |
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Each hash must contain at least the 'username' and 'domain' of a student. |
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=item $symb is the symb for the problem. |
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=item $part is the part id you need statistics for |
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=item $courseid is the course id, of course! |
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=back |
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Outputs: See the code for up to date information. A hash reference is |
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returned. The hash has the following keys defined: |
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=over 4 |
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=item num_students The number of students attempting the problem |
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=item tries The total number of tries for the students |
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=item max_tries The maximum number of tries taken |
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=item mean_tries The average number of tries |
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=item num_solved The number of students able to solve the problem |
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=item num_override The number of students whose answer is 'correct_by_override' |
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=item deg_of_diff The degree of difficulty of the problem |
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=item std_tries The standard deviation of the number of tries |
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=item skew_tries The skew of the number of tries |
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=item per_wrong The number of students attempting the problem who were not |
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able to answer it correctly. |
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=back |
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=cut |
=cut |
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################################################ |
################################################ |
Line 1182 sub get_problem_statistics {
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Line 1230 sub get_problem_statistics {
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'CREATE TEMPORARY TABLE '.$stats_table. |
'CREATE TEMPORARY TABLE '.$stats_table. |
' SELECT student_id,solved,award,tries FROM '.$performance_table. |
' SELECT student_id,solved,award,tries FROM '.$performance_table. |
' WHERE symb_id='.$symb_id.' AND part_id='.$part_id; |
' WHERE symb_id='.$symb_id.' AND part_id='.$part_id; |
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if (defined($students)) { |
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$request .= ' AND ('. |
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join(' OR ', map {'student_id='. |
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&get_student_id($_->{'username'}, |
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$_->{'domain'}) |
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} @$students |
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).')'; |
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} |
# &Apache::lonnet::logthis($request); |
# &Apache::lonnet::logthis($request); |
$dbh->do($request); |
$dbh->do($request); |
my ($num,$tries,$mod,$mean,$STD) = &execute_SQL_request |
my ($num,$tries,$mod,$mean,$STD) = &execute_SQL_request |
Line 1202 sub get_problem_statistics {
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Line 1258 sub get_problem_statistics {
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$solved = 0 if (! defined($solved)); |
$solved = 0 if (! defined($solved)); |
# |
# |
my $DegOfDiff = 'nan'; |
my $DegOfDiff = 'nan'; |
$DegOfDiff = 1-($Solved + $solved)/$tries if ($tries>0); |
$DegOfDiff = 1-($Solved)/$tries if ($tries>0); |
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my $SKEW = 'nan'; |
my $SKEW = 'nan'; |
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my $wrongpercent = 0; |
if ($num > 0) { |
if ($num > 0) { |
($SKEW) = &execute_SQL_request($dbh,'SELECT SQRT(SUM('. |
($SKEW) = &execute_SQL_request($dbh,'SELECT SQRT(SUM('. |
'POWER(tries - '.$STD.',3)'. |
'POWER(tries - '.$STD.',3)'. |
'))/'.$num.' FROM '.$stats_table); |
'))/'.$num.' FROM '.$stats_table); |
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$wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10; |
} |
} |
# |
# |
$dbh->do('DROP TABLE '.$stats_table); # May return an error |
$dbh->do('DROP TABLE '.$stats_table); # May return an error |
return ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD,$SKEW); |
return { num_students => $num, |
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tries => $tries, |
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max_tries => $mod, |
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mean_tries => $mean, |
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std_tries => $STD, |
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skew_tries => $SKEW, |
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num_solved => $Solved, |
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num_override => $solved, |
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per_wrong => $wrongpercent, |
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deg_of_diff => $DegOfDiff } |
} |
} |
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sub execute_SQL_request { |
sub execute_SQL_request { |