#### Answer

Minimum is 30
The 1st quart is 80.
Median is 170
3rd quart is 252
Maximum is 410

#### Work Step by Step

You have the values 30,70,90,120,220,224,280,410.
The minimum is the lowest value which is 30.
The median is the middle value which is 170.
The maximum is the highest value which is 410
The first quartile is the middle value between the minimum and the median(30,70,90,120). The middle values are 70 and 90 so you have to find their average. The first quartile is 80.
The third quartile is the middle value between the median and the maximum(220,224,280,410). The middle values are 224 and 280 so you have to find their average. The third quartile is 252.