The mean and variance of a set of 15 numbers are 12 and 14 respectively. The mean and variance of another set of 15 numbers are 14 and respectively. If the variance of all the 30 numbers in the two sets is 13, then is equal to:
- A
- B
- C
- D
MCQMediumJEE Main 2023 · 6 April, Shift 1Measures of Dispersion
Mathematics Question from JEE Main 2023 · 6 April, Shift 1
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