Laila12618
If the median of 127 numbers is 35, which of the following must be true?
I) At least 64 of the numbers are greater than or equal to 35
II) At least 64 of the numbers are smaller than 35
III) At most 64 numbers are greater than or equal to 35
A. I only
B. II only
C. III only
D. I and II only
E. I and III only
Posted from my mobile deviceLet's assume that the numbers in the set are arranged in the ascending order.
I) At least 64 of the numbers are greater than or equal to 35True ! In a set of 127 numbers, 63 numbers will lie to the right of the median and 63 numbers will lie to the left of the median. The numbers that lie to the right of the median have a value greater than or equal to the median*.
Hence, at most 64 numbers can be greater than or equal to 35.
II) At least 64 of the numbers are smaller than 35Not true In a set of 127 numbers, the 63 numbers that lie to the left of the median can have a value of 35. Hence, this statement is not true.
III) At most 64 numbers are greater than or equal to 35This may be true; it's not guaranteed to be true In a set of 127 numbers, the 63 numbers that lie to the left of the median can have a value of 35. Hence, more than 64 numbers can have a value of 35.
Option A