stem-and-leaf plot and line plot
TRANSCRIPT
Prepared by:
Ms. MA. IRENE G. GONZALES
University of Santo Tomas Junior High School
Mathematics Department
OBJECTIVESAt the end of the lesson, the students should be able to:
• synthesize the knowledge about the appropriate use of
graphs to represent organized data;
• illustrate line plot and stem – leaf plot in organizing data;
and
• show evidence of mastery through drills and group
exercises.
Let’s see HOW you DID it…
Construct a pie graph given the tabular data on the
population of students enrolled in USTJHS for the
A.Y. 2015 - 2016
Grade
Level
G7 G8 G9 G10 Total
No. of
enrollees350 385 420 405 1560
% 22% 25% 27% 26% 100%
Angle 81° 89° 97° 93° 360°
22%
25%27%
26%
No. of enrollees of USTJHS for the S.Y. 2014 -
2015
Grade 7
Grade 8
Garde 9
Grade 10
Grade
LevelG7 G8 G9 G10 Total
No. of
enrollees350 385 420 405 1560
% 22% 25% 27% 26% 100%
Angle 81° 89° 97° 93° 360°
Let’s see HOW you DID it…
Use a bar graph if you are not looking for trends(or patterns) over time; and the items (orcategories) are not parts of a whole.
Use a line graph if you need to see how aquantity has changed over time. Line graphsenable us to find trends (or patterns) over time.
Use a pie chart if you need to compare differentparts of a whole, there is no time involved andthere are not too many items (or categories).
CHOOSING THE RIGHT GRAPH
Learning Objective: Students should be able to synthesize the knowledge about the
appropriate use of graphs to represent organized data.
CONCEPTUAL CHECK
Which statistical graph best fit for the set of data?
The allocation of the monthly budget of a family
Learning Objective: Students should be able to synthesize the knowledge about the
appropriate use of graphs to represent organized data.
CIRCLE GRAPH
CONCEPTUAL CHECK
Which statistical graph best fit for the set of data?
The donations by each grade level of UST High School for the victims of Typhoon
Yolanda
Learning Objective: Students should be able to synthesize the knowledge about the
appropriate use of graphs to represent organized data.
BAR GRAPH
CONCEPTUAL CHECK
Which statistical graph best fit for the set of data?
Changes in temperature over a week in Manila
Learning Objective: Students should be able to synthesize the knowledge about the
appropriate use of graphs to represent organized data.
LINE GRAPH
CONCEPTUAL CHECK
Which statistical graph best fit for the set of data?
The number of members per grade level for the Math Club for
S.Y. 2014 – 2015
Learning Objective: Students should be able to synthesize the knowledge about the
appropriate use of graphs to represent organized data.
BAR GRAPH
JUMBLE-LITOS
LIDTGAI ATNIEVA person born or brought up during the age of digital technology and
therefore familiar with computers and the Internet from an early age.
DIGITAL NATIVE
CIOLSA ADEMIThese are computer-mediated tools that allow people to create, share or
exchange information, ideas, and pictures/videos in virtual communities and networks.
SOCIAL MEDIA
JUMBLE-LITOS
AIBOHPTROSAUCLFear of confined spaces
CLAUSTROPHOBIA
JUMBLE-LITOS
TCAVINA YTCIThe smallest country in the world.
VATICAN CITY
JUMBLE-LITOS
ECNEILISERThe capacity to recover quickly from difficulties.
RESILIENCE
JUMBLE-LITOS
ENGAGE YOURSELF!The following data shows the highest score of 16
students from St. Bernadette in the Flappy Bird
game:
107 105 115 108 106 106 109 110
110 108 114 115 115 113 115 108
How are you going to
organize this data in
order to make it
presentable?
LINE PLOTSteps:
1. Determine the highest and the lowest values in
the data.
2. Construct a number line.
3. Put an “x” above each number as many times it
appears in the data.
HLNLXLearning Objective: Students should be able to illustrate line plot and stem – leaf chart
in organizing data.
LET’S TRY IT! The following data shows the highest score of
16 students from St. Bernadette in the Flappy
Bird game:
107 106 108 108 106 106 109 110
110 108 114 114 112 113 112 108
Learning Objective: Students should be able to show evidence of mastery through drills
and group exercises.
STEM–AND–LEAF PLOT
The table below shows the stem-and-leaf plot of the
following data:
19 43 17 21 23 22 33 32 32 18
Stem Leaf
1 7 8 9
2 1 2 3
3 2 2 3
4 3
Learning Objective: Students should be able to illustrate line plot and stem – leaf chart
in organizing data.
STEM–AND–LEAF PLOT
LEAF – shows all the ones digits
STEM – digit/s that remain/s when the leaf is
dropped
19 43 17 21 23 22 33 32 32 18
Stem Leaf
1 7 8 9
2 1 2 3
3 2 2 3
4 3
Arrange in
ascending
order
Learning Objective: Students should be able to illustrate line plot and stem – leaf chart
in organizing data.
Scores of 20 Basketball Players in One Game13 33 18 21
10 23 14 18
23 12 25 10
21 19 10 17
15 15 20 18
a. What is the score of the highest pointer?
b. What is the score of the lowest pointer?
c. What is most frequent score?
d. How many scored above 20 points? Above 10 points? Below
20 points?
LET’S PRACTICE!
Learning Objective: Students should be able to show evidence of mastery through drills
and group exercises.
GEARING UP!
The data below shows the number of hours spent by
15 students in the library in a given week.
5 8 9 6 6 7 9 10
9 5 7 9 8 10 8
Learning Objective: Students should be able to show evidence of mastery through drills
and group exercises.
List down at least 5 numerical
descriptions on the data.