JEE Main Statistics questions
2 Mathematics questions on Statistics as asked in JEE Main, newest first. 2 come with a worked solution.
- 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…
2023 · with solution
- Let the six numbers a_1, a_2, a_3, a_4, a_5, a_6, be in A.P. and a_1 + a_3 = 10. If the mean of these six numbers is 19/2 and their variance is σ^2, then 8σ^2 is equal to :
2023 · with solution
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