A
B
C
D
E
List the numbers in ASCENDING ORDER to get: 19, 24, 27, 29, 31.VJesus12 wrote:
For the 5 days shown in the graph, how many kilowatt-hours greater was the median daily electricity use than the average (arithmetic mean) daily electricity use?
A) 1
B) 2
C) 3
D) 4
E) 5
[spoiler]OA=A[/spoiler]
Source: GMAT Prep
Listing the numbers from smallest to largest, we have: 19, 24, 27, 29 and 31. So 27 is the median. The average is (19 + 24 + 27 + 29 + 31)/5 = 130/5 = 26. Therefore, the median exceeds the average by 1.VJesus12 wrote:
For the 5 days shown in the graph, how many kilowatt-hours greater was the median daily electricity use than the average (arithmetic mean) daily electricity use?
A) 1
B) 2
C) 3
D) 4
E) 5
[spoiler]OA=A[/spoiler]
Source: GMAT Prep
