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Developer Documentation
- Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
- Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
- PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
/question/bank/statistics/classes/ -> helper.php (source)
Differences Between: [Versions 402 and 403]
(no description)
| File Size: | 235 lines (9 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 1 class
helper:: (9 methods):
get_all_places_where_questions_were_attempted()
load_statistics_for_place()
extract_item_value()
calculate_average_question_stats_item()
calculate_average_question_facility()
calculate_average_question_discriminative_efficiency()
calculate_average_question_discrimination_index()
format_percentage()
format_discrimination_index()
Helper for statistics
| get_all_places_where_questions_were_attempted(array $questionids) X-Ref |
| For a list of questions find all the places, defined by (component, contextid) where there are attempts. param: int[] $questionids array of question ids that we are interested in. return: \stdClass[] list of objects with fields ->component and ->contextid. |
| load_statistics_for_place(string $component, \context $context) X-Ref |
| Load the question statistics for all the attempts belonging to a particular component in a particular context. param: string $component frankenstyle component name, e.g. 'mod_quiz'. param: \context $context the context to load the statistics for. return: all_calculated_for_qubaid_condition|null question statistics. |
| extract_item_value(all_calculated_for_qubaid_condition $statistics,int $questionid, string $item) X-Ref |
| Extract the value for one question and one type of statistic from a set of statistics. param: all_calculated_for_qubaid_condition $statistics the batch of statistics. param: int $questionid a question id. param: string $item ane of the field names in all_calculated_for_qubaid_condition, e.g. 'facility'. return: float|null the required value. |
| calculate_average_question_stats_item(array $questionids, string $item) X-Ref |
| Calculate average for a stats item on a list of questions. param: int[] $questionids list of ids of the questions we are interested in. param: string $item ane of the field names in all_calculated_for_qubaid_condition, e.g. 'facility'. return: array array keys are question ids and the corresponding values are the average values. |
| calculate_average_question_facility(int $questionid) X-Ref |
| Calculate average facility index param: int $questionid return: float|null |
| calculate_average_question_discriminative_efficiency(int $questionid) X-Ref |
| Calculate average discriminative efficiency param: int $questionid question id return: float|null |
| calculate_average_question_discrimination_index(int $questionid) X-Ref |
| Calculate average discriminative efficiency param: int $questionid question id return: float|null |
| format_percentage(?float $number, bool $fraction = true, int $decimals = 2) X-Ref |
| Format a number to a localised percentage with specified decimal points. param: float|null $number The number being formatted param: bool $fraction An indicator for whether the number is a fraction or is already multiplied by 100 param: int $decimals Sets the number of decimal points return: string |
| format_discrimination_index(?float $value) X-Ref |
| Format discrimination index (Needs checking?). param: float|null $value stats value return: array |
