Ques. 1JEE Main 2025, 23 January (Evening Shift)
The variance of the numbers 8, 21, 34, 47, , 320 is .
Statistics
Previous year questions with solutions · 2024 – 2026
38Questions
38Papers covered
3.37%Weightage 2026▲ 100% vs last year
’24
’25
’26
Year-wise statistics questions · papers · average per paper · weightage
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 16 | 19 | 0.84 | 3.37% ▲ 100% vs last year |
| 2025 | 8 | 19 | 0.42 | 1.68% ▼ 27.8% vs last year |
| 2024 | 14 | 20 | 0.7 | 2.33% |
Ques. 2JEE Main 2024, 8 April (Evening Shift)
Let a, b, c N and a < b < c. Let the mean, the mean deviation about the mean and the variance of the 5 observations 9, 25, a, b, c be 18, 4 and 1365, respectively. Then 2a + b - c is equal to
Ques. 4JEE Main 2024, 29 January (Morning Shift)
If the mean and variance of the data 65,68,58,44,48,45,60, , ,60 where > , are 56 and 66.2 respectively, then 2+ 2 is equal to .
Ques. 5JEE Main 2024, 27 January (Evening Shift)
The mean and standard deviation of 15 observations were found to be 12 and 3 respectively. On rechecking it was found that an observation was read as 10 in place of 12 . If and 2 denote the mean and variance of the correct observations respectively, then 15 ( + 2+ 2 ) is equal to .