[Informatics] VCAA Practice Exam - Sect. C, Q1, Sect. B, Q4.

[Christophersen, Paula P]

Hi Benn

I am not going to directly answer the question in the Sample paper but I just want to make a comment about the definition of efficiency. According to the study design Glossary ‘efficiency’ is measured in terms of time, effort and cost. The ‘time’ factor does not always mean the quickest time; it could be an indicator of a process that minimises the waste of time to complete task or it could be an indicator of the best available process in terms of time. This means that a process might take a long time but it may be the one that minimises waste of time or it is the best available in terms of time, hence it is efficient.

Regards
Paula



Paula Christophersen
Curriculum Manager, Digital Technologies
Victorian Curriculum and Assessment Authority
2 Lonsdale Street
MELBOURNE 3000
(03) 9032 1724
0407 043 110

From: informatics-bounces at edulists.com.au [mailto:informatics-bounces at edulists.com.au] On Behalf Of Benn POLLOCK
Sent: Monday, 10 October 2016 4:08 PM
To: informatics at edulists.com.au
Subject: [Informatics] VCAA Practice Exam - Sect. C, Q1, Sect. B, Q4.

Hello All,

Looking for some feedback on the VCAA Inforamtics Sample exam. As there is no sample answers I'm just unsure on some questions as to what the best response would be.

Section C - Q1A -
State the condition(s) that would cause the paths labelled B to be followed.

Is this as simple as - The user is able to return to the beginning of the purchasing process at the end (display total cost) if they decide they wish to edit their order.

I feel somewhat dumb that this question is troubling me the most as it's only 1 mark and I find the rest of the exam somewhat easy.

Section B - Q4 - key words here to me are efficient and accurately. She is trying to put information from 300 photos into a spreadsheet/database to help her identify how many of each different house type there was in what decade. I was thinking along the lines of developing a spreadsheet/access with the appropriate fields/rows (decade & house type) and then "codifying" each the photo into the appropriate category - followed by using a COUNTIF or a Query (if using Access) to generate a count of different types of houses as per Q4b. Then i thought, is this efficient? It seems like it would take a long time to do this - but how else do you convert visual data, into text quickly?? What are your thoughts on this?

Maybe i'm having a "brain fart" moment and missing something more obvious here?

Looking forward to your feedback.
Cheers :)
--
Benn Pollock
Year 9 Level Leader
VCE Computing & Informatics Teacher

Ph. 9801-9700

IMPORTANT - This email and any attachments may be confidential. If received in error, please contact us and delete all copies. Before opening or using attachments check them for viruses and defects. Regardless of any loss, damage or consequence, whether caused by the negligence of the sender or not, resulting directly or indirectly from the use of any attached files our liability is limited to resupplying any affected attachments. Any representations or opinions expressed are those of the individual sender, and not necessarily those of the Department of Education and Training.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.edulists.com.au/pipermail/informatics/attachments/20161010/970a3a4b/attachment-0001.html