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AP EAMCET202318 May 2023Evening ShiftMathematicsStatisticsActual

Students of two sections A and B of a class show the following results in a test conducted for 100 marks. array |l|c|c| & Section A & Section B Number of students & 50 & 60 array l Average marks in the test array & 45 & 45 array l Variance of distribution of marks array & 64 & 81 array Then

Options

  1. Avariability of section B> variability of section A
  2. Bvariability of section A> variability of section B
  3. Cvariability of section A= variability of section B
  4. DThe data is not sufficient to compare the variability of the sections

Correct answer

A. variability of section B> variability of section A

Step-by-step solution

Average marks of section A and section B in the test is same, but the variance of distribution of marks of section B is greater than section A . Variability of section B> variability of section A .

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