Question

here is a list of students birthdays (day of the month as a number). 3 6 6 9 10 12 12 15 18 18 18 18 21 23 23 23 27 27 30 30 31 31. which number belongs in the blank below? students birthdays

0	3, 6, 6, 9
1	0, 2, 2, 5, 8, 9, 9, 9
2	1, 3, __, 3, 7, 7
3	0, 0, 1, 1

key: 2|5 means 25. 1 2 3 4

Explanation:

Step1: Understand the stem - and - leaf plot

The stem - and - leaf plot has a key where \(2|3\) means \(23\). The left - hand column is the tens digit (stem) and the right - hand column is the units digit (leaf).

Step2: Identify the missing number

We look at the list of students' birthdays and match the numbers to the stem - and - leaf plot. The numbers in the \(20\)s in the list are \(21,23,23,23,27,27\). In the stem - and - leaf plot for the stem of \(2\), we already have \(1,3,3,7,7\) as leaves. The missing number from the list that should be in the plot for the stem of \(2\) is \(23\), and the missing leaf is \(3\).

Answer:

3