Answer:
Option d. 37
Step-by-step explanation:
A value that "lies outside" (is much smaller or larger than) most of the other values in a set of data is called outlier.
In other words we can say the most deviated number is called outlier.
The given data 21, 13, 13, 37, 13, 23, 25
As we can see 37 is the outlier here as it way too bigger than other numbers.
Option d. 37 is the correct answer.
