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Statistics question

2023 · 25 Jan · Shift 1 · Q27
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  5. /2023 · 25 Jan · Shift 1 · Q27

Statistics question

2023 · 25 Jan · Shift 1 · Q27

JEE MainMathematicsStatisticsMCQ+4 / −1
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 :
  1. A
    3.92
  2. B
    4.08
  3. C
    3.96
  4. D
    4.04
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