Question

the stem - and - leaf plot below shows the number of pages each student in the class read the previous evening. 0 | 0 0 5 8 1 | 2 3 5 8 8 9 2 | 2 4 6 7 7 7 3 | 3 5 6 4 | 2 4 6 5 | 7 according to the plot, 75% of students read less than 13 pages. 33 pages. 35 pages. 46 pages.

Explanation:

Step1: Count the total number of students

Count the number of leaves in each row: \(4 + 5+5 + 3+3 + 1=21\) students.

Step2: Calculate \(75\%\) of the total number of students

\(0.75\times21 = 15.75\approx16\) (we round up to the next whole number when dealing with counts of people).

Step3: List the data in ascending order

The data values from the stem - and - leaf plot: \(0,0,5,8,12,13,15,18,18,19,22,24,26,27,27,27,33,35,36,42,44,46,57\).

Step4: Find the 16th value

Counting the 16th value in the ordered list: The 16th value is \(33\).

Answer:

33 pages.