12 JEE Main 2022 Statistics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2022 previous-year questions from the Statistics chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Statistics chapter hub.
The mean and standard deviation of 40 observations are 30 and 5 respectively. It was noticed that two of these observat…
The mean and variance of 10 observations were calculated as 15 and 15 respectively by a student who took by mistake 25…
If the mean deviation about median for the number 3 , 5 , 7 , 2 k ,   12 , 16 , 21 , 24 arranged in the ascending…
Let the mean and the variance of 5 observations x 1 , x 2 , x 3 , x 4 , x 5 be 24 5 and 194 25 respectively. If the mea…
The mean and standard deviation of 15 observations are found to be 8 and 3 respectively. On rechecking it was found tha…
Suppose a class has 7 students. The average marks of these students in the mathematics examination is 62 , and their va…
The mean of the numbers a , b , 8 , 5 , 10 is 6 and their variance is 6 . 8 . If M is the mean deviation of the numbers…
The number of values of a ∈ N such that the variance of 3 ,   7 ,   12 ,   a ,   43 - a is a…
Let the mean and the variance of 20 observations x 1 , x 2 , … x 20 be 15 and 9 , respectively. For α ∈…
If the mean deviation about the mean of the numbers 1 , 2 , 3 , … … , n , where n is odd, is 5 n + 1 n , th…
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