BPP Revision Kit - Question 162

Sorry, but I have not yet received my copy of the latest edition of the Revision Kit, and so what you are asking does not refer to Q162 in my revision kit. If it is a Section C type question then just tell me the name of the question and I will find it. If it is an MCQ, then type out some of the question.

The answer is correct as favourable. It is because the actual yield (or output) is higher than was expected (the standard yield or output). Have you watched my free lecture on mix and field variances? The lectures are a complete free course for Paper F5 and cover everything needed to be able to pass the exam well.