OSID - osid.grading.GradebookColumnSummary Service Interface Definition

Interface	osid.grading.GradebookColumnSummary
Implements	`osid.OsidObject`
Used By	`osid.grading.GradebookColumnLookupSession`
Description	A `GradebookColumnSummary` is a summary of all entries within a gradebook column.
Method	getGradebookColumnId
Description	Gets the `Id` of the `GradebookColumn`.
Return	`osid.id.Id`		the `Id` of the `GradebookColumn`
Compliance	`mandatory`		This method must be implemented.
Method	getGradebookColumn
Description	Gets the `GradebookColumn`.
Return	`osid.grading.GradebookColumn`		the `GradebookColumn`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getMean
Description	Gets the mean score. If this system is based on grades, the mean output score is returned.
Return	`decimal`		the mean score
Compliance	`mandatory`		This method must be implemented.
Method	getMedian
Description	Gets the median score. If this system is based on grades, the mean output score is returned.
Return	`decimal`		the median score
Compliance	`mandatory`		This method must be implemented.
Method	getMode
Description	Gets the mode of the score. If this system is based on grades, the mode of the output score is returned.
Return	`decimal`		the median score
Compliance	`mandatory`		This method must be implemented.
Method	getRMS
Description	Gets the root mean square of the score. If this system is based on grades, the RMS of the output score is returned.
Return	`decimal`		the median score
Compliance	`mandatory`		This method must be implemented.
Method	getStandardDeviation
Description	Gets the standard deviation. If this system is based on grades, the spread of the output scores is returned.
Return	`decimal`		the standard deviation
Compliance	`mandatory`		This method must be implemented.
Method	getSum
Description	Gets the sum of the scores. If this system is based on grades, the sum of the output scores is returned.
Return	`decimal`		the median score
Compliance	`mandatory`		This method must be implemented.
Method	getGradebookColumnSummaryRecord
Description	Gets the gradebook column summary record corresponding to the given `GradebookColumnSummary` record `Type`. This method is used to retrieve an object implementing the requested record. The `gradebookColumnSummaryRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(gradebookColumnSummaryRecordType)` is `true`.
Parameters	`osid.type.Type`	`gradebookColumnSummaryRecordType`	the type of the record to retrieve
Return	`osid.grading.records.GradebookColumnSummaryRecord`		the gradebook column summary record
Errors	NULL_ARGUMENT		`gradebookColumnSummaryRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(gradebookColumnSummaryRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.