It is 18, the number in the middle when they are arranged in order.
Chat with our AI personalities
In the example provided, the quartiles are: 25% = 16.5 (the median of {15, 16, 17, 18}) 50% = 18.5 (the median of {15, 16, 17, 18, 19, 20, 21, 22}) 75% = 20.5 (the median of (19, 20, 21, 22})
16.5 is the median.
It is 18, the middle number when they are in order.
Order them: 15 16 17 21 21 Find the middle one: 17 That is the median
18