Answer:
B. 11
Explanation:
The 50th percentile represents the halfway point of a data set and therefore, it is simply another name for the median.
We can use the following steps to find the median:
Step 1: Arrange the numbers in ascending numerical order:
10, 10, 11, 12, 13.
Step 2: Find the middle of the numbers:
Since there are 5 numbers, the median will have two numbers to the left and right of it. 11 satisfies this requirement so it is the median and thus the 50th percentile of the numbers.