Question

The median of 8 numbers is 4.5 given that seven of the numbers are 9,2,3,4,12,13 and 1 find the eighth number

Answer 1

Step-by-step explanation:

9+2+3+4+12+13+1

44

4.5×8

36

Answer 2

Answer:

5.5

Step-by-step explanation:

Let the eighth number be x.

Then the numbers arranged in ascending order:

1,2,2,4,7,8,13,x

Since these are 8 in number.

Median value =

$\frac{\frac{8}{2} th. value+(\frac{8}{2} + 1)th.value}{2}$

$\frac{4th .value+5 th. value}{2}$

=$\frac{4+7}{2}$

=$\frac{11}{2} =5.5$