The worst mistake was an impossible NCEA Level 3 Statistics exam question, sat by about 15,000 students, which contained a table that added up to 121.1% instead of 100%. A review panel will start investigating what went wrong with last year's NCEA maths exams - just as exam results are due to be posted. The three-member panel has been set up after mistakes were found in four maths and statistics exams for the National Certificate of Educational Achievement (NCEA) and NZ Scholarships. The worst mistake was in the NCEA Level 3 Statistics exam, sat by about 15,000 students, which contained a table that added up to 121.1% instead of 100%, making it impossible to answer the question. NCEA numbers:146,000 students sat NCEA or Scholarship exams last year5000 sat exams digitally15,000 sat a faulty Statistics exam10,225 applied for review or reconsideration of their 2015 results1976 had their marks changed as a result

Source: Otago Daily Times January 13, 2017 23:21 UTC