• We are pleased to announce that the winner of our Feedback Prize Draw for the Winter 2024-25 session and winning £150 of gift vouchers is Zhao Liang Tay. Congratulations to Zhao Liang. If you fancy winning £150 worth of gift vouchers (from a major UK store) for the Summer 2025 exam sitting for just a few minutes of your time throughout the session, please see our website at https://www.acted.co.uk/further-info.html?pat=feedback#feedback-prize for more information on how you can make sure your name is included in the draw at the end of the session.
  • Please be advised that the SP1, SP5 and SP7 X1 deadline is the 14th July and not the 17th June as first stated. Please accept out apologies for any confusion caused.

Chapter 12 page 48:- Grouping of Sign Test

A

Amit_Bansal

Member
In Step3 in core reading, it is written test will fail when G<k. And in last para on the same page, it is written test failed when no. of groups of +ve deviations is LESS THAN OR EQUAL TO critical value.

My doubt here is whether test fails only when G<k or it also fails when G=k.
 
Amit_Bansal said:
In Step3 in core reading, it is written test will fail when G<k. And in last para on the same page, it is written test failed when no. of groups of +ve deviations is LESS THAN OR EQUAL TO critical value.

My doubt here is whether test fails only when G<k or it also fails when G=k.
Click to expand...

Critical value is k-1 , so you can't reject null hypothesis on G=k.
 
It's a test for overgraduation.
So basically our null hypothesis is : our true underlying mortality rates corresponds to graduated rates.
But the underlying concept is :
We should have greater than or equal to groups of positive deviations than the no of positive deviations group obtained when signs are arranged in random order.If we have fewer positive deviations group than rates are overgraduated and fit is not good.
 
You must log in or register to reply here.
Back
Top