Methods Camp is a two-week intensive course to get all incoming PhD students in economics to ensure that everyone are familiar with some technical tools before the main courses start. There are two week-long and separate parts: The first deals with general mathematical tools: Calculus, Analysis, and Linear Algebra. The second part is more specific and deals with probability and statistics.
Details about the method camp here: https://www.statsokonomen.no/2023/02/23/methods-camp-for-new-phd-students-august-2023/