The data represent the ages of people working at a store.

20, 30, 22, 29, 24, 27, 33, 25, 21, 19, 23

what is the first quartile of these ages?

a.
19

b.
29

c.
21

d.
20

First, arrange the data from lowest to highest
19, 20, 21, 22, 23, 24, 25, 27, 29, 30, 33

Next, find the media or the middle data.
The median is 24.
19, 20, 21, 22, 23, 24 (median), 25, 27, 29, 30, 33

Lastly, look at the data below the median and find the middle of those data. If it's between two numbers, choose the lower number. That's the first quartile.
The first quartile is 21.
19, 20, 21(Q1), 22, 23, 24 (median), 25, 27, 29, 30, 33

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)

Use a calculator basically