find the first quartile and third quartile for the set of values.

Question

25, 34, 17, 12, 39, 26, 48, 21, 24

12, 17, 21, 24, 25, 26, 34, 39, 48

(1 point)

first quartile = 22; third quartile = 29.75

first quartile = 18.5; third quartile = 34.25

first quartile = 19; third quartile = 36.5

first quartile = 25.5; third quartile = 34.5

Answer 1

To find the first quartile, first find the median of the lower half of the data set:

12, 17, 21, 24

The median of this set is the value in the middle, which is 21. This is the first quartile.

To find the third quartile, first find the median of the upper half of the data set:

25, 26, 34, 39, 48

The median of this set is the value in the middle, which is 34. This is the third quartile.

Therefore, the first quartile is 21 and the third quartile is 34.