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PostPosted: Sat Sep 10, 2016 7:46 pm 
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Joined: Wed Jul 31, 2013 8:44 pm
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Hi,
Does anyone know if age standardisation is applied to the CCHS CEM and CSSE tests? I've heard various rumours but can't confirm it anywhere.
Thank you !


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PostPosted: Sat Sep 10, 2016 8:29 pm 
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Joined: Wed Jan 18, 2012 11:41 am
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Location: Essex
littlemissm wrote:
Hi,
Does anyone know if age standardisation is applied to the CCHS CEM and CSSE tests? I've heard various rumours but can't confirm it anywhere.
Thank you !


CCHS yes. CSSE, no. I was told that they do look at the results to check, but have never found the need to standardise by age, from a statistical point of view. 'The tests are not age standardised' is part of the answer to one of the FAQs on the CSSE website.

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PostPosted: Sat Sep 10, 2016 11:27 pm 
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i had no idea that standardisation applied to the CEM exam....


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PostPosted: Sun Sep 11, 2016 6:31 pm 
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Location: Herts
All CEM exams are standardised and all Verbal and Non Verbal Reasoniing exams that I know of. DG


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PostPosted: Sun Sep 11, 2016 6:51 pm 
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Thank you. Does anyone know if the age standardisation makes much difference in CEM if CSSE hasn't found the need to apply it?


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PostPosted: Mon Sep 12, 2016 7:29 am 
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Joined: Mon Oct 12, 2015 9:30 am
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I am note sure if I am correct on my observation from last year results of CSSE.
I came to a conclusion that CSSE scoring is based on Age Standardization !

One example I could deduce is,
Maths | English | Score | TotalMarks | Percentage | Ratio of Marks/Score
43 | 42 | 340.42 | 85 | 70.83% | 4.004941176
55 | 32 | 337.206 | 87 | 72.50% | 3.875931034

A pupil with lesser Total marks, got higher final score. How can this happen except for having an age standardization in place ?
Correct me if I am wrong.


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PostPosted: Mon Sep 12, 2016 8:37 am 
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Joined: Wed Jan 18, 2012 11:41 am
Posts: 4605
Location: Essex
ypkr wrote:
I am note sure if I am correct on my observation from last year results of CSSE.
I came to a conclusion that CSSE scoring is based on Age Standardization !

One example I could deduce is,
Maths | English | Score | TotalMarks | Percentage | Ratio of Marks/Score
43 | 42 | 340.42 | 85 | 70.83% | 4.004941176
55 | 32 | 337.206 | 87 | 72.50% | 3.875931034

A pupil with lesser Total marks, got higher final score. How can this happen except for having an age standardization in place ?
Correct me if I am wrong.


You are wrong, I'm afraid - if you look at the CSSE website, you will find the statement that age standardisation is not used

The two papers are treated individually - they have a different mean and standard deviation, so for example a difference in raw score of 2 marks in the English paper will have a different effect on the overall standardised score than the same difference in the Maths paper. Look back in the Essex section for a post from a member who asked the CSSE for the relevant details and you can see how the overall score is calculated - in previous years, this was 'Aang', but last year someone else asked, I'm afraid I can't remember who but it was very soon after the results day in October.

Your calculation re '%' etc doesn't come into it.

ETA - have a look at Blitz's post on the last page here, which includes an explanation of how the standardised score is calculated:

http://www.elevenplusexams.co.uk/forum/11plus/viewtopic.php?f=15&t=41452&start=80#p529665

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Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx


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PostPosted: Mon Sep 12, 2016 9:43 am 
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Joined: Mon Oct 12, 2015 9:30 am
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Thanks a lot Toadmum, for correcting me.

I forgot about that standardization over mean which was posted earlier.


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