Class Observation Powerpoint in Mathematics 6

1. Collects data on one or two
variables using any source
- Using Tally Table

2. Motivation
• You have learned that
constructing frequency table
makes it easier for you to
collect data.
• Another way of collecting data
is by constructing tally table.

3. Presentation
• Airline A asked passengers on a
flight to rate the quality of their
service. The table below shows the
ratings of 24 passengers. Make a
frequency distribution table of the
data collected. How many
passengers gave a rating of 3 and
below?

4. Present the tally table:

5. How to construct tally table?
• 1. Arrange the service ratings in
order.
• 2. Make a tally
• 3. Count the tally marks. Write the
frequencies.
• 4. Total all the frequencies

7. • 1. How many passengers gave a rating
of 5? 4? 3? 2? 1?
• 2. How many gave a rating of
excellent?
• 3. How many gave a rating of good?
• 4. How many gave a rating of very
good?
• 5. How many gave a rating of fair?

8. Present another problem:
• 2. Mr. Guce, a Grade 6 English
teacher in San Antonio Central
School, asked his 12 pupils about
their weekly allowance . Make a
frequency table of the following
data he collected. How many pupils
have an allowance of at least P250?

10. Answer the following:
• How many pupils have an
allowance of “at least” P250?
The word “at least” means “no
less than” or “at the minimum”

11. The table shows the favorite
subjects in school of selected
Grade 6 pupils of Paciano Rizal
Elementary School. Complete
the frequency table below then
answer the following questions:

13. Answer the following:
• 1. What is the most favorite subject of the
selected Grade 6 pupils?
• 2. What is their least favorite subject?
• 3. How many pupils chose Math as their
favorite school subject?
• 4. How many pupils were in the survey?
• 5. Which subjects have equal frequency?

14. Group work:
Create a tally table for each set of
data then answer the following
questions:

15. Answer the following:
• 1. How many pupils were
asked about their grades in
Math?
• 2. How many pupils got a
“satisfactory” grade?
• 3. Which descriptor has the
lowest number of frequency?

16. Generalization:
•How do you organize data?

17. Evaluation
• Complete the frequency table below then
answer the following questions:

18. Answer the following:
• Answer the following:
• 1. How many people were in the survey?
• 2. How many people had a pulse rate of 75-79
beats per minute?
• 3. What is the most common number of beats per
minute?
• 4. How many people had pulse rates of 80 and
higher?
• 5. How many people had pulse rates of at least