[Year 12 IT Apps] 2015 IT Post Mortems - ITA and SD

Thu Nov 19 15:02:14 AEDT 2015

Maybe it was designed to allow for the notion of equal rankings as a viable option?

From Wikepedia, and we know from a forgotten Fed minsiter that it’s a great source of knowledge…

"A ranking is a relationship between a set of items such that, for any two items, the first is either 'ranked higher than', 'ranked lower than' or 'ranked equal to' the second.[1]<https://en.wikipedia.org/wiki/Ranking#cite_note-1> In mathematics<https://en.wikipedia.org/wiki/Order_theory>, this is known as a weak order or total preorder<https://en.wikipedia.org/wiki/Strict_weak_ordering#Total_preorders> of objects. It is not necessarily a total order<https://en.wikipedia.org/wiki/Total_order> of objects because two different objects can have the same ranking. The rankings themselves are totally ordered. For example, materials are totally preordered by hardness<https://en.wikipedia.org/wiki/Hardness_(materials_science)>, while degrees of hardness are totally ordered."

George

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From: Mark <mark at vceit.com<mailto:mark at vceit.com>>
Reply-To: Year 12 IT Applications Teachers' Mailing List <itapps at edulists.com.au<mailto:itapps at edulists.com.au>>
Date: Thu, 19 Nov 2015 11:55:27 +1100
To: Year 12 IT Applications Teachers' Mailing List <itapps at edulists.com.au<mailto:itapps at edulists.com.au>>
Subject: Re: [Year 12 IT Apps] 2015 IT Post Mortems - ITA and SD

Hi Christopher. B is the least-worst option.

You're right: it allows people to give two or more genres the same ranking, but at least it forces the entry of a ranking for each genre, which the other options do not do.

<morning grumble>
And I still maintain that preventing the input of invalid data is not really a 'validation technique'.
Wikipedia says: "In computer science, data validation is the process of ensuring that a program operates on clean, correct and useful data. It uses routines, often called "validation rules", "validation constraints" or "check routines", that check for correctness, meaningfulness, and security of data that are input to the system."

Validition is an active process that verifies data that has already been input into the system.
It is more than the passive use of controls that prevent the entry of invalid data into the system.
Anyway...
</morning grumble>

Mark

On 19 November 2015 at 10:11, Christopher Jansen <Christopher.Jansen at sjc.vic.edu.au<mailto:Christopher.Jansen at sjc.vic.edu.au>> wrote:
Mark, and others…  would like to get your thoughts on this…
[cid:image002.jpg at 01D122B2.9EACC1A0]
MC : Question 13
For option B
If you group all radio buttons together then only on option could be selected.  This is not ranking, just picking an option…
If you group radio buttons horizontally then you could pick all ones for each type of music.. not a valid option as it does not rank.
If you group radio buttons vertically then you could choose 1, 2,3, 4 for a single type of music…  also not a valid option as it done not rank.

B is the best answer out of all of them… but still a very poor validation technique.. and not one I would use on a website for ranking. Ranking may be better served with a  drag and drop scenario… or some fancy Java script and some drop down lists…

Chris

From: itapps-bounces at edulists.com.au<mailto:itapps-bounces at edulists.com.au> [mailto:itapps-bounces at edulists.com.au<mailto:itapps-bounces at edulists.com.au>] On Behalf Of Mark
Sent: Monday, 16 November 2015 3:36 PM
To: Year 12 IT Applications Teachers' Mailing List; Year 12 Software Development Teachers' Mailing List
Subject: [Year 12 IT Apps] 2015 IT Post Mortems - ITA and SD

Hi all.

The 2015 ITA Post Mortem<http://vceit.com/p/postmortem-2015i.htm> and 2015 SD Post Mortem<http://vceit.com/p/postmortem-2015s.htm> are available in early drafts.

Dumb screw-ups are yet to be found and fixed in the next few days.

I appreciate feedback and corrections.

Enjoy.

Mark

--

Mark Kelly

mark at vceit.com<mailto:mark at vceit.com>
http://vceit.com

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