RSQL is a parallelogram: KQ = QM, L = 70, and ROK = 55.

Question

ScanSolve AI Tutor · Accepted Answer

To find out how many learners wrote the test for question 1.15:

Understand how to read a stem-and-leaf diagram.
Each "leaf" in the diagram represents one data point (in this case, one learner's mark). To find the total number of learners, count all the leaves.
Count the leaves for each stem.
- For Stem 0 (marks 0-9): The leaves are 0, 0, 1, 1, 8. There are 5 learners.
- For Stem 1 (marks 10-19): There are no leaves. There are 0 learners.
- For Stem 2 (marks 20-29): The leaves are 2, 3, 5, 5, 6, 8, 9. There are 7 learners.
- For Stem 3 (marks 30-39): The leaves are 0, 1, 2, 3, 3, 3, 4, 5. There are 8 learners.
Sum the number of learners from each stem.
Total learners = $5 + 0 + 7 + 8 = 20$ .

The number of learners who wrote the test is $\text{B. 20}$ .

Answer