SAT PREP 2015

Question

 

10,18,4,15,3,21,x

 

If x is the median of the 7 numbers listed above, what could be the value of x, if x is an integer.

 

Answer 1

Hi Minah

 

Arrange numbers in ascending order,

 

3 , 4 ,10, X ,15,18,21

 

As X is the Median. it is the middle obn.

 

X is an integer so X could be 11 or 12 or 13 or 14.

Answer 2

The median is the value in the middle of a series of values.

 

We can rearrange the numbers into the following order.

 

3,4,10,15,18,21

 

If x is to be the median, then x must be between 10 and 15.

 

In which case, the possible values of x are 11,12,13, and 14, provided that x is an integer.

Answer 3

The median is the middle valued number of a set of numbers.  Arrange the number set in increasing order with x as the middle number:

 

3, 4, 10, x, 15, 18, 21

 

x can take on any value between 10 and 15: 10 ≤ x ≤ 15.

Answer 4

Hi Minah,

 

The median is the number in the middle of a list of numbers

 

in this case if we place the numbers in order

 

3,4,10,x,15,18,21

 

X could be 11, 12, 13, or 14

 

Hope this helps