If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Project Maths Percentage Error

kebab12 · 2015-03-19 20:08:48

So my teacher is really confusing me for higher level leaving cert maths and he just can't answer this question: When I'm looking for the percentage error do I use the 1/the square root on n. He says that it may be a different formula this year but won't say what it is. Thanks.

19-03-2015 9:08pm

#1

kebab12

Registered Users Posts: 5 ✭

Join Date: March 2015

Posts: 2

So my teacher is really confusing me for higher level leaving cert maths and he just can't answer this question: When I'm looking for the percentage error do I use the 1/the square root on n. He says that it may be a different formula this year but won't say what it is. Thanks.

0

Comments

#2 19-03-2015 10:09pm

Kremin

Registered Users Posts: 942 ✭✭✭

Join Date: June 2013

Posts: 931

kebab12 wrote: »

So my teacher is really confusing me for higher level leaving cert maths and he just can't answer this question: When I'm looking for the percentage error do I use the 1/the square root on n. He says that it may be a different formula this year but won't say what it is. Thanks.

https://www.folens.ie/sites/default/files/resources/ML5303_AM4_Bk2_Booklet%20eBook.pdf

1/rootN isn't used anymore because it's inaccurate/ only 95% confidence.

the new formula is +-1.96(sigma/sqrtn) You should read that anyway.

0