List of top Mathematics Questions on Statistics asked in LPUNEST

The mean of \(n\) items is \(\bar{x}\). If each item is successively increased by \(3, 3^2, 3^3, \ldots, 3^n\), then the new mean will be:
If the mean deviation of the numbers 1, 1+d, 1+2d, … , 1+100d from their mean is 255, then the common difference d is
If $y=y(x)$ is the solution of the differential equation \[ x\frac{dy}{dx}+2y=x^2 \] satisfying $y(1)=1$, then $y\!\left(\dfrac{1}{2}\right)$ is equal to: