The average score of 100 students in a subject was given to be 40. It was later found that a score 53 was recorded as 83 by mistake. What is the corrected average score?
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2 marks, −1StatisticsDescriptive statistics and dispersionThe arithmetic mean and its propertiesEasyabout 1 min
JNU SIS 2015 Question 23: Descriptive statistics and dispersion
Answer and worked solution
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Descriptive statistics and dispersion has come up 117 times in 6 exams since 2004.
What this question tests
This question is on The arithmetic mean and its properties, part of Descriptive statistics and dispersion in Statistics.
Computing the mean from raw and grouped data, and what changes when data are shifted, scaled or corrected.
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Question from the JNU SIS 2015 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.