A scientist is studying four samples of snakes. She measures the mass of 10 snakes in each sample. A summary of her data is shown below. Mass is shown in grams.
Sample
Least
Lower
Median Upper Greatest
Mass
Quartile
Mass Quartile Mass
A
13
16
19
24
25
B
11
12
15
22
26
C
6
10
16
21
24
D
8
11
14
18
20
8.
Which sample of snakes shows the greatest spread in the upper 25% of their mass?
9.
Which sample of snakes shows the least spread in the lower 50% of their mass?
10.
What is the difference between the middle 50% of Sample D and the middle 50% of Sample A?