AP1 mock test 2 answers

Not a big error, but I figured I would add it to my rant as it was here.

I really wish AAT would answer their questions as asked, it gives such a bad impression of this 'professional' organisation.

Question 1.1 in AP test 2
http://www.aat-interactive.org.uk/elearning/new/API_PracticeAssessment_2/index.html

Clearly states in the Notes

Show your answers to 2 decimal places

Out of the 8 numbers in the answers ONE of them is written to 2 decimal places.

The numbers written are

148
444
890
178
712
1327.50
3982.5
1700

Sure, the numbers are the same with / without the decimal points. But the question clearly states how to post the answers.

Thanks for your help Stuart. I may or may not send an email to them in reply to that, but will post my final counter points here for continuity.

StuartW wrote: »

'These are all alternative ways of showing the correct answer and none is necessarily more correct than the other. The exact same argument can be used for the second example. As these are all alternatives, they are merely variations on the same theme but all provide the correct answer. None are incorrect.

'The student is allowed to use any formulae they wish, as long as it works. Everyone applies logic in different ways, and there are different ways of expressing the same idea. The guidance does state that the formulae can be expressed in any way, as long as the answer is correct.'

How about "=max(min(average(sum(j2+k2))))", each of those functions take the ONE argument given to it, and output the same value that it was given, i.e. does nothing. By the logic they have used this would result in full marks, yet it shows a complete lack of understanding of what the student is doing.

StuartW wrote: »

The suggested answers should provide a range of alternative ways of using formulae in order to demonstrate the variety of valid approaches and, therefore, the argument about consistency of use is not valid.

I agree it should show a variety of ways, yet nowhere in the suggested answers have they used "=sum(j2,k2)" which would be using the sum function for it's intended purpose.

I can't believe they even defended "=SUM(I8*0.2)+I8". This means they consider "=SUM(I8*0.2)" to be a perfectly acceptable use of the sum function, no addition of any type has been done. It's just as correct as using Max, Min, Average, and any other mathematical function which would do nothing if given a one argument input.

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I'll have one last crack at explaining how the Sum function works here:

Consider a bunch of baskets. Each basket has a certain number of apples in it.
The Sum function is used in the following way

"=Sum(basket1,basket2,basket3,....basketN)"

Where N is the number of baskets containing the apples you want to add up.
The Sum function then takes the number of apples in each of the N baskets and adds them together.

e.g. 1:
"=Sum(17,5)"
There are 17 apples in basket 1, 5 apples in basket 2. The Sum function adds these together, 17+5, and returns the value 22.

e.g. 2:
"=Sum(17+5)"
There are 17+5=22 apples in basket 1 and there is only 1 basket, so the Sum function returns the number of apples in basket 1, 22.

e.g. 3:
"=SUM(18*0.2)"
Again there is only 1 basket, it contains 18*0.2 = 3.6 apples. So the sum function takes these 3.6 apples, adds them together with no other baskets and returns the value 3.6