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PostPosted: Thu Oct 04, 2018 11:33 am 
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Joined: Wed Sep 19, 2018 1:38 pm
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What is the standarised score out of ?


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PostPosted: Thu Oct 04, 2018 11:40 am 
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Joined: Mon Mar 15, 2010 2:45 pm
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Standardised scores are never "out of" anything. The raw score is "out of". Search on here for an explanation of standardised scores.


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PostPosted: Thu Oct 04, 2018 11:48 am 
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scary mum wrote:
Standardised scores are never "out of" anything. The raw score is "out of". Search on here for an explanation of standardised scores.

ah ok. thanks


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PostPosted: Thu Oct 04, 2018 12:05 pm 
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I'm not sure precisely how Bexley do their standardising but this might help you visualise it.

Imagine that all the children's test results are put in a line, from bottom score to top score. The child who is exactly in the middle is given a standardised score of 100. The child who is exactly one-third of the way along the line is given the score of 85 and the one who is exactly two-thirds along is given 115. The child who is at the very start is given the score of 60 and the one at the very end (the person who came top in the exam) gets 140.

The rest of the scores are distributed along the line in a bell curve, so that two-thirds of scores will be between 85 and 115 with one-sixth of children getting below 85 and one-sixth getting above 115.

You can see that the standardised scores don't relate to the raw the scores - the person who gets a standardised score of 140 may not have got 100% in the test, for example, and the person getting 100 may not have got 50%. What you can find out from a standardised score is where your child came in the cohort, eg top 10% or bottom 20%.

(If there are two test the highest standardised score will be doubled to 280).


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