Statistics — UPSC CSAT Previous Year Questions

Practice UPSC CSAT previous year questions from 2011–2026 classified underStatistics. Review the original question, four options, correct answer and explanation for every PYQ.

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Question 1

UPSC CSAT 2012Mean, Range & Comparison

Question visualOriginal table appears on uploaded question-paper page 26.

Consider the following information regarding the performance of a class of 1000 students in four different tests: Tests: I, II, III, IV Average marks: 60, 60, 70, 80 Range of marks: 30–90, 45–75, 20–100, 0–100 If a student scores 74 marks in each of the four tests, in which one of the following tests is her performance the best comparatively?

ATest I

BTest II

CTest III

DTest IV

View Answer & Explanation+

Correct AnswerB

Explanation

Relative performance is strongest in Test II: 74 is very close to its upper bound of 75 and is 14 marks above its mean of 60. The other tests give a smaller relative standing.

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