Stories
Statistical Test Flags Cheating in KPSC Exam: How It Works
- •A statistical probability test detected unusual similarities in answers of KPSC exam top rank-holders, flagging potential cheating.
- •The Karnataka CID used the test in the KPSC veterinary doctor recruitment exam probe, finding a 99.9% match in answers among 14 top candidates.
- •The test analyzes response patterns in multiple-choice exams, focusing on matching wrong answers and identical incorrect options, which are more revealing than correct answers.
- •A 95% or higher match indicates an exact link, with 99.6% to 100% indicating statistically certain fraud.
- •The CID analysis revealed 100% answer matches among several top rank-holders and a 99% probability of cheating for others, leading to confessions and arrests in the alleged paper leak.
Key Questions Answered
The Karnataka CID used a statistical probability test that analyzes response patterns in multiple-choice examinations to detect unusual similarities. The analysis found a 99.9 percent match in the answers of 14 top rank-holders and a 99 percent chance they received leaked questions.
While multiple well-prepared candidates can naturally select the same correct answer, getting the same questions wrong and choosing identical incorrect options is highly revealing of collusion. A match of 95 percent or above indicates an exact link between answer keys, signaling a high probability of fraud.
The CID arrested KPSC controller of examinations Gynanendra Kumar Gangwar and middleman Basavaraj Kannale, who allegedly collected up to Rs 40 lakh per candidate for leaked questions. Both individuals were subsequently arrested by the Enforcement Directorate in a related money-laundering case.
