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Statistics · 2023 · 25 Jan · Shift 1

1 Mathematics questions from this JEE Main paper
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Statistics · 2023 · 25 Jan · Shift 1

1 Mathematics questions from this JEE Main paper

  1. Q27.The mean and variance of the marks obtained by the students in a test are 10 and 4 respectively. Later, the marks of one of the students is increased from 8 to 12. If the new mean of the marks is 10.2, then their new variance is equal to :
    Mathematics · Statistics · MCQ