Question

below is a stem and leaf plot of the ages of the u.s. olympic soccer team players.

age of u.s. olympic soccer team players

stem | leaf
1 | 0 9 9
2 | 1 3 4 4 5 6 7 8 9
3 | 0 0 1 1 2
4 | 0

key: 1|8 = 18

1. based on the data in the stem and leaf plot: how many players are on the team? * 1 point

○ 18
○ 19
○ 20
○ 22

Explanation:

Step1: Count leaves for stem 1

Stem 1 has leaves: 0, 9, 9. So count is $3$.

Step2: Count leaves for stem 2

Stem 2 has leaves: 1, 3, 4, 4, 5, 6, 7, 8, 9. Count is $9$.

Step3: Count leaves for stem 3

Stem 3 has leaves: 0, 0, 1, 1, 2. Count is $5$.

Step4: Count leaves for stem 4

Stem 4 has leaf: 0. Count is $1$.

Step5: Sum all counts

Total players = $3 + 9 + 5 + 1 = 18$? Wait, no, wait: 3 (stem1) + 9 (stem2) +5 (stem3)+1 (stem4) = 18? Wait, no, let's recalculate: 3 + 9 is 12, 12 +5 is 17, 17 +1 is 18? Wait, but wait the options have 18,19,20,22. Wait, maybe I miscounted stem 2. Let's check stem 2 leaves: 1,3,4,4,5,6,7,8,9. Let's count: 1 (1), 3 (2), 4 (3), 4 (4), 5 (5), 6 (6), 7 (7), 8 (8), 9 (9). So 9. Stem1: 0,9,9: 3. Stem3: 0,0,1,1,2: 5. Stem4: 0:1. Total: 3+9=12, 12+5=17, 17+1=18. Wait, but the option is 18? Wait, but maybe I made a mistake. Wait, let's check again. Stem 1: 3 leaves. Stem 2: 9 leaves. Stem 3: 5 leaves. Stem 4: 1 leaf. 3+9=12, 12+5=17, 17+1=18. So the total number of players is 18.

Answer:

18 (corresponding to the option "18")