the stem - and - leaf plot below gives the test scores for the 20 students in mrs. ya\ntest score\n5|8…

the stem - and - leaf plot below gives the test scores for the 20 students in mrs. ya\ntest score\n5|8 8\n6|4 5\n7|0 1 1 2 3 3 7 9\n8|0 6 6 8\n9|0 5 6 8\nkey: 5|8 means a score of 58.\n(a) what was the lowest score in the 70s?\n(b) how many students scored in the 60s?\n(c) what was the highest score overall?

the stem - and - leaf plot below gives the test scores for the 20 students in mrs. ya\ntest score\n5|8 8\n6|4 5\n7|0 1 1 2 3 3 7 9\n8|0 6 6 8\n9|0 5 6 8\nkey: 5|8 means a score of 58.\n(a) what was the lowest score in the 70s?\n(b) how many students scored in the 60s?\n(c) what was the highest score overall?

Answer

Explanation:

Step1: Identify scores in 70s

The scores in the 70s from the stem - and - leaf plot are 70, 71, 71, 72, 73, 73, 77, 79. The lowest among them is 70.

Step2: Count scores in 60s

The scores in the 60s are 64 and 65. So the number of students who scored in the 60s is 2.

Step3: Find highest overall score

Looking at all the scores in the plot: 58, 58, 64, 65, 70, 71, 71, 72, 73, 73, 77, 79, 80, 86, 86, 88, 90, 95, 96, 98. The highest score is 98.

Answer:

(a) 70 (b) 2 (c) 98