Question

HELP ASAP!!!!!!!!!!!!!!!!!

25,8,10,35,5,45,40,30,20
what is the median of the data set above ?
A.10
B.22.5
C.25
D.27.5

25,8,10,35,5,45,40,30,20
What is the upper quartile of the data set above?
A.35
B.37.5
C.37
D.40

Answer 1

1. The median is 25
2. The upper quartile is 40, I believe

Answer 2

1. Median of the data set is 25. Therefore the correct option is C.

2. The upper quartile of the data set is 37.5. Therefore the correct option is B.

Explanation:

The given data set is

25,8,10,35,5,45,40,30,20

Arrange the data in ascending order.

5,8,10,20,25,30,35,40,45

Median of the data set divides the data into two equal parts. Median is the middle term of the data set.

Divide the data in two equal parts.

(5,8,10,20),25,(30,35,40,45)

Median of the data set is 25. Therefore the correct option is C.

Divide each parenthesis in two equal parts.

(5,8),(10,20),25,(30,35),(40,45)

Upper quartile of the data set divides the data in 3:1.

`Q_3=(35+40)/(2)=37.5`

The upper quartile of the data set is 37.5. Therefore the correct option is B.