It works just like binomial and Poisson. They're not symmetry. You can also do hypothesis tests on variances using the Chi Squared distribution which isn't symmetrical.

There's definitely no reason why you can't have one. www.savemyexams.com/a-level/furt...

I wish I knew this when I worked in Sixth Form colleges. We used OCR in one and Edexcel in the other. The students would have preferred having only two papers.
However having a third helps for targeted revision between papers I suppose.

Ah interesting to know! Thanks.

Why are the high grades so low for Eduqas Maths? Do most people who choose that board do foundation?

The other should be optional. This would help to solve lots of issues. Also think GCSE Stats needs to be highlighted more.

Fully agree! There should be a "numeracy" one which contains the skills that most jobs require such as percentages and data handling. It doesn't even need to be a GCSE. It could just be a pass/fail like the numeracy test that teachers take.

Or ban the ÷ symbol.

I taught A Level Accounting despite having no prior knowledge. It was a great fun challenge!

We recently made resources for Calc BC and it looks like an awesome course. Do you teach it in the UK or are you US based?