Question

Five observations are arranged in ascending order the median of this observation is the ( ) observation .

Answer 1

Answer:

In such an ascending order, x is greater 50, and (x + 2) less than 72, which means that x is less than 70 and greater than 50.

Now, x and (x + 2) are equally distanced from the left and the right sides of the sequence respectively, i.e, there are 4 numbers to the left of x and 4 to the right of (x + 2), which means that the average of x and (x + 2) is the median itself. therefore, [x + (x + 2)]/2 = 63, and then x = 62