Go to navigation
It is currently Tue Mar 09, 2021 11:23 am

All times are UTC




Post new topic Reply to topic  [ 8 posts ] 
Author Message
 Post subject: The Mean....
PostPosted: Wed Oct 17, 2018 10:56 am 
Offline

Joined: Wed Oct 17, 2018 9:49 am
Posts: 8
Hey peeps, does anyone know the previous three years mean for the respective cohort? I think I read somewhere that last year the mean was 200 but can't seem to find this key information now.

The mean this year is 203 so I think the overall qualifying mark will go up by three marks.


Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 12:06 pm 
Offline

Joined: Tue Sep 11, 2018 4:29 pm
Posts: 38
As per my reply on the other thread. The final number is rounded from the 50% VR +25% NVR + 25%NUM sum. (I can see that from my child's results)

I therefore expect calculating a mean off rounded data will give a different figure than the underlying more precise figures.


Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 3:02 pm 
Offline

Joined: Wed Oct 17, 2018 2:56 pm
Posts: 23
I also posted on the other thread. The mean is 200 because that is what they have adjusted (normalised) the scores to create. Your child's final score is not just the sum of the questions they answered correctly, it has had some adjustments made to it based on a few factors.


Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 3:44 pm 
Offline

Joined: Wed Oct 17, 2018 3:33 pm
Posts: 1
Hi Darkmuseuk,
Are you saying that the mean is 200 each year?

(New to the site due to a borderline score for my son, trying to get my head round the implications!)


Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 4:03 pm 
Offline

Joined: Wed Oct 17, 2018 2:56 pm
Posts: 23
I believe so, if I read the information correctly, yes.
If you look at the table half way down this page you can see that Warwickshire have historically normalised the standardised scores to give an average of 200 and a standard deviation of 30. There's a rabbit hole of maths to follow if you haven't studied statistics :)

https://en.wikipedia.org/wiki/Eleven-plus

200 = average
230 = top 15%


Last edited by darkmuseuk on Wed Oct 17, 2018 4:32 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 4:08 pm 
Offline

Joined: Wed Oct 17, 2018 9:49 am
Posts: 8
Sorry for post here as well but post before hadn’t gone through on the other topic and new to the forum and now see it has. :shock:

I still don’t understand how they get the mean to be 200 when they take it from the actual standardised scores than actual scores. But hey ho just the waiting game continues...


Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 4:09 pm 
Offline

Joined: Wed Oct 17, 2018 9:49 am
Posts: 8
Thank you darkmuseuk!


Top
 Profile  
 
 Post subject: Re: The Mean....
PostPosted: Wed Oct 17, 2018 4:31 pm 
Offline

Joined: Wed Oct 17, 2018 2:56 pm
Posts: 23
Sorry, when I said halfway down the page I meant this wikipedia article:
https://en.wikipedia.org/wiki/Eleven-plus


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Privacy Policy | Refund Policy | Disclaimer | Copyright © 2004 – 2021