What is the median of the data 11, 11, 31, 34, 26, 9, 56, 64, 2, 1?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 18.5
The median is the middle value once the data are arranged in order. With an even number of values there are two middle values, and the median is their average.
In ascending order: 1, 2, 9, 11, 11, 26, 31, 34, 56, 64
10 values, so the middle values are the 5th (11) and the 6th (26)
Median \(\displaystyle=\frac{11+26}{2}=\frac{37}{2}=18.5\)
The median is 18.5.