MATHEMATICS 7
Week 2
Name of Learner: __________________________
Section: _______________________
Grade Level: ____________
Date: ___________________
Organization of Data
Learning Competency:
 Organizes data in a frequency distribution table. M7SP-IVc-1
After collecting data using the different sampling techniques, the next thing to do is to organize and
present the data for interpretation and analysis.
Here are some ways of organizing data .
Way
Steps
1. Determine the highest and lowest values in the data..
2. Construct a number line covering these values.
3. Put an “x” above each number on the number line as many times as it
appears in the data.
Line Plot
ILLUSTRATION:
Data: A 10 –item math quiz was given to 30 students . Their scores are given below.
10
9
6
8
7
10
5
4
3
2
2
1
4
6
9
1
5
9
10
2
7
10
6
8
1
2
4
5
3
1
Line Plot:
Stem- and-Leaf
Place the tens digits in the stem and the ones digits in the leaf.
ILLUSTRATION:
Data: The ages of 20 members of the Bayanihan Club is shown below.
28
31
31
29
26
31
40
45
35
29
42
37
35
25
28
25
42
45
40
37
Stem
Frequency table
leaf
2
3
5 5 6 8 8 9 9
1 1 1 5 5 7 7
4
0 0
2
2 5 5
1. Tally or count the number of times a data value occurs.
2. Count the numbers of occurences of a data to get frequency.
ILLUSTRATION:
Data: the scores of 30 students in a science quiz.
SCORE
TALLY
FREQUENCY
1
IIII
4
2
IIII
4
3
II
2
4
III
3
5
III
3
6
III
3
7
II
2
8
II
2
9
III
3
10
IIII
4
Example: Use the most appropriate way to organize the data below.
Below are the results of a survey about the favorite colors of 15 students in a freshman class.
Green
Violet
Yellow
Red
Black
Red
Yellow
Green
White
White
Yellow
Red
Red
Black
Green
Answer:
Frequency Table
Tally
Frequency
Color
Green
III
3
Red
llll
4
Yellow
lll
3
Violet
I
1
White
ll
2
Black
ll
2
Activity:
The sales manager of a company recorded the number of air conditioning units sold by each of
the 25 sales agents.
20
21
25
28
28
25
20
26
26
26
21
21
27
27
26
24
25
29
29
28
22
24
30
30
30
Draw the frequency table for the data, and then refer the table to answer each question below.
1. What is the most number of air conditioning units sold by sales agents?
2. What is the least number of air conditioning units sold by sales agents?
3. Which among the numbers of air conditioning units sold were sold by the same number of
sales agents?
Number of
Airconditioning
Units
Tally
Frequency