A presentation on giving a summative test on the measures of position (quartiles, percentiles, deciles)

1. Prepared by:
Teacher III

2. PRAYER
Dear God, with all Your gifts and graces, I call upon
you today.
Help me to recall the facts I have studied for this test.
Guide my thinking process, and fill my mind with the
ideas and concepts I need to know in order to
do well.
Illuminate my mind and make clear the answers I am
supposed to give for each question.
As I answer, keep my thoughts clear and concise.
Replace any anxiety I feel with peace in knowing that
You are with me to assist me and guide my
responses.
Amen.

3. CLASSROOM MANAGEMENT
1. Arrange your chairs.
2. Pick up the pieces of paper scattered on the
floor if there are.
3. Sit properly.

4. CHECKING OF ATTENDANCE
Actual Number
of Learners
Number of
Learners Present
Male 24
Female 19
Total 43

5. REVIEW
Question 1: What are the measures of position?
Define each of them.
The measures of position are quartiles (Q),
percentiles (P), and deciles (D).
• Quartiles are values that divide a rank-ordered
set of elements into 4 equal parts.
• Percentiles are values that divide a rank-ordered
of elements into 100 equal parts.
• Deciles are values that divide a rank-ordered set
of elements into 10 equal parts.

6. REVIEW
Question 2: What is the equivalent of Q2 in
percentile and in decile?
• P50 and D5

7. REVIEW
Question 3: What is ∑𝑓?
Class Interval Frequency (𝒇)
38-40 1
35-37 1
32-34 2
29-31 6
26-28 5
23-25 4
20-22 1

8. REVIEW
Question 4: What are the numbers to under
< 𝑐𝑓?
Class Interval 𝒇 < 𝒄𝒇
38-40 1
35-37 1
32-34 2
29-31 6
26-28 5
23-25 4
20-22 1
20

9. REVIEW
Question 5: What are the lower boundaries of
the class intervals?
Class Interval 𝒇 𝑳𝑩
38-40 1
35-37 1
32-34 2
29-31 6
26-28 5
23-25 4
20-22 1
20

10. REVIEW
Question 6: Given the following data, what are
Q2, Q1, and Q3?
20 22 23 26 29
30 30 35 39 40

11. REVIEW
Question 7: Given these scores of students in
a test, what is Q2? What does it mean?
Scores 𝒇 < 𝒄𝒇
38-40 1 20
35-37 1 19
32-34 2 18
29-31 6 16
26-28 5 10
23-25 4 5
20-22 1 1
20

12. REVIEW
Question 8: Given the data, what is P49?
5 6 8 8 11
13 14 15 15 16
17 17 21 26 26
28 29 30 30 30
31 32 32 34 35
37 38 38 38 39
43 44 45 46 46
46 46 46 47 48
49 50 53 55 56
57 57 58 59 60

13. REVIEW
Question 9: Given these scores of students in
a test, what is P60?
Scores 𝒇 < 𝒄𝒇
38-40 1 20
35-37 1 19
32-34 2 18
29-31 6 16
26-28 5 10
23-25 4 5
20-22 1 1
20

14. REVIEW
Question 10: In the National Career
Assessment Examination (NCAE) result of
Kyle, he got a percentile rank of 90 in
Mathematical Ability. What does the percentile
rank 90 mean?
It means that 90% of the class got a score
below his score in Mathematical Ability.

15. REVIEW
Question 11: Given the data, what is D6?
5 6 8 8 11
13 14 15 15 16
17 17 21 26 26
28 29 30 30 30

16. REVIEW
Question 12: Given these scores of students in
a test, what is D9? What does it mean?
Scores 𝒇 < 𝒄𝒇
38-40 1 20
35-37 1 19
32-34 2 18
29-31 6 16
26-28 5 10
23-25 4 5
20-22 1 1
20

17. STANDARDS DURING THE TEST
1. Bring out only the materials needed: one black or blue
ballpen, one scratch paper, and a calculator.
2. No cellphones shall be used or viewed during the test.
3. Communicating with one another in any manner, side
glancing, and standing are not allowed during the test.
4. If there are questions for clarifications, they should be
addressed only to the teacher.
5. After answering the last item, remain seated and quiet.
You may review your answers and change them if
necessary.
6. At the conclusion of the test, all writing shall cease.

18. ACTUAL TEST
1. Get one copy of the four-page test
questionnaire.
2. Scan your test questionnaires to see if there
are misprints or missing items.
3. Answer the 30-item test for 30 minutes only.

19. CHECKING OF TEST QUESTIONNAIRES
1. Exchange papers with a classmate who is
not beside you.
2. Check properly the test questionnaire.

20. ANSWERS
1. D 6. C 11. C 16. D 21. B 26. B
2. A 7. A 12. C 17. B 22. A 27. D
3. D 8. D 13. D 18. D 23. C 28. B
4. A 9. C 14. B 19. B 24. D 29. C
5. B 10. A 15. A 20. C 25. C 30. D

21. PERCENTAGE OF MASTERY
1. Item Analysis
2. Highest Score and Lowest Score

22. ASSIGNMENT
Prepare for the Fourth Periodical Examination in
Mathematics 10 on March 15, 2019 (Friday).
Lessons Covered:
1. The Fundamental Principle of Counting
2. Probability of Simple Events
3. Probability of the Union of Two Events
4. Probability of Independent Events
5. Conditional Probability
6. Measures of Position (Quartiles, Percentiles,
and Deciles)