Moodle

Standardise checkbox for calculation form

Details

  • Type: Sub-task Sub-task
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Won't Fix
  • Affects Version/s: 1.9
  • Fix Version/s: None
  • Component/s: Gradebook
  • Labels:
    None
  • Affected Branches:
    MOODLE_19_STABLE

Description

Linked to MDL-10364

The idea is to have a checkbox for standardisation of grades before application of calculation.

The reason is that, for example, you may have 3 items, each of them with a very different range (0-100, 0-4, 54-4646 etc...). Applying a formula such as
=(gi1 + gi2 + gi3) / 3
is meaningless, since the item with the smallest range will drastically affect the resulting mean.

The implementation would simply standardise the grades from each included grade_item before applying the calculation. Doing this manually in the calculation would be very complex, even impossible for some teachers who may not have a great grasp of mathematics.

Issue Links

This issue will help resolve:
MDL-10364 Calculation formulas Blocker Closed

Activity

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Nicolas Connault added a comment -

I don't think the calculations are really usable until this is also implemented.

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Nicolas Connault added a comment - I don't think the calculations are really usable until this is also implemented.
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Petr Škoda (skodak) added a comment -

I was already thinking about it, users know the ranges, they can type them in formulas - or they can set the ranges to be the same in this case.

Another solution is to have access to min and max in calculation - [idnumber]#min and [idnumber]#max? Not hard to implement.

Show
Petr Škoda (skodak) added a comment - I was already thinking about it, users know the ranges, they can type them in formulas - or they can set the ranges to be the same in this case. Another solution is to have access to min and max in calculation - [idnumber]#min and [idnumber]#max? Not hard to implement.
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Petr Škoda (skodak) added a comment -

Closing this for now, teachers know the grades mins and maxes - ttey can construct the right formulas. If they do not know how to to it, they can use one of the many aggregation functions that are available. Check box would not be easy to implement, because we would have to store the information somewhere in db or inside the formula.

Show
Petr Škoda (skodak) added a comment - Closing this for now, teachers know the grades mins and maxes - ttey can construct the right formulas. If they do not know how to to it, they can use one of the many aggregation functions that are available. Check box would not be easy to implement, because we would have to store the information somewhere in db or inside the formula.
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Permalink
Petr Škoda (skodak) added a comment -

oh, thanks for the report anyway!

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Petr Škoda (skodak) added a comment - oh, thanks for the report anyway!

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Dates

  • Created:
    Updated:
    Resolved:
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