What is an average viva?
I get this question at least once a month. I struggle to answer.
I can’t talk about length, because while there is a skewing towards two hours across disciplines, the range is pretty big. It’s tricky to talk about the exact style of the exam; it is a semi-structured discussion but the nature of questions is going to vary a lot from discipline to discipline.
Examiners will be qualified and prepared, but they might not be experts – depending on your field there might not be an expert who can examine you. I suppose it is fair to say most people find out the result within thirty minutes of the end of the viva (after a short break). Most people are fairly happy with the corrections they’re asked to do.
But what is average?
Can we change the question? How about: what is typical for the viva?
Typically it comes at the end of a successful project. Typically the candidate has spent a significant period of time becoming experienced. Typically they’ve written a good thesis. Typically they’ve continued to build on all of this work in the period leading up to the viva by getting prepared.
There are lots of ways the variety of vivas struggle to come to some average. But typically? Typically, you’re up to the challenge.