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[3] 2021 was the only year throughout JEE-Main history, when a maximum of 4 attempts were given to students. [4] In general, for the rest of the years, most students took the JEE-Main exam in either 1 or 2 attempts, even though a maximum of 3 attempts is allowed during two consecutive years.
JEE-Main, unlike JEE-Advanced, has a fixed exam structure and is not subject to change every year. Up until 2018, the JEE-Main Paper-I was three hours long and consisted of thirty questions in each of the three subjects (physics, chemistry and maths). 4 marks are awarded for correct answers and 1 mark is deducted for incorrect answers.
However, with 2022 JEE-Main being postponed from April / May to 20–29 June / 21–30 July, JEE-Advanced 2022 was also postponed and subsequently held on 28 August 2022. On 5 November 2024, it is announced by IIT Kanpur , and Joint Admission Board(JAB) that the attempts of JEE-Advanced are now increased from 2 to 3. [ 72 ]
Graphics interpretation questions ask test takers to interpret a graph or graphical image. Each question has fill-in-the-blank statements with pull-down menus; test takers must choose the options that make the statements accurate. Multi-source reasoning questions are accompanied by two to three sources of information presented on tabbed pages.
Section one consists of 60 MCQs of 1 marks each and Section two consists of the remaining 20 MCQs of 2 marks each. Negative marking is applicable. 30% of the total marks of a question will be deducted for every incorrect answer. [3] In 2006, the WBJEE contained only objective-type MCQ (Multiple Choice Question) type questions.
Each correct response fetches 4 marks and each incorrect response gets -1 negative marking. The exam duration is 3 hours 20 minutes (200 min). The exam is of 720 marks (maximum marks). Since 2021, there has been a significant alteration in the format of the question paper. The latest structure includes two sections, i.e.
Predicted reliability, ′, is estimated as: ′ = ′ + ′ where n is the number of "tests" combined (see below) and ′ is the reliability of the current "test". The formula predicts the reliability of a new test composed by replicating the current test n times (or, equivalently, creating a test with n parallel forms of the current exam).
Given a sample from a normal distribution, whose parameters are unknown, it is possible to give prediction intervals in the frequentist sense, i.e., an interval [a, b] based on statistics of the sample such that on repeated experiments, X n+1 falls in the interval the desired percentage of the time; one may call these "predictive confidence intervals".