Question

test score
5|1 6
6|4 7
7|0 2 2 3 3 7 9
8|1 1 4 5
9|1 4 5
key: 5|1 means a score of 51.
(a) how many students scored in the 80s?
(b) what was the lowest score in the 60s?
(c) what was the highest score overall?

Explanation:

Step1: Count 80s scores

Stem 8 has leaves 1,1,4,5. Count = $4$

Step2: Find lowest 60s score

Stem 6 has leaves 4,7. Lowest = $64$

Step3: Find highest overall score

Stem 9 has leaves 1,4,5. Highest = $95$

Answer:

(a) 4
(b) 64
(c) 95