12, 98, 247, 4869, 27597, 468, 19653, 2, 087, 673, 838, 8593, 1043, 79643, 7346, 43, 3, 47, 3573, 467, 245

**Stem and Leaf Plot**

**How Do We Use It?**

What is the Importance of the

"Stem and Leaf Plot"?

The stem and leaf plot is used for the organization of numbers.

**Question One**

What Are Stem and Leaf Plots?

Stem and Leaf plot is a device for presenting quantitative data in graphical format.

1900's

1977

1980's

Where Did it Come from?

The stem and leaf plot evolved from Arthur Browley's work in the early 1900s.

Publication of John Tukey's Book

What is the Book about?

What Happened Next?

Let's Go One Step Further

Arthur Lyon Browley?

He was was an English statistician and economist who worked on economic statistics and pioneered the use of sampling techniques in social surveys.

Died on the 21st of January, 1957

**Azriel John Ang**

Tristan Paul Juansing

Nathan Andrew Gonzales

John Michel Lee

Stanley Vincent Lim

Amos Raphael Tiu

Tristan Paul Juansing

Nathan Andrew Gonzales

John Michel Lee

Stanley Vincent Lim

Amos Raphael Tiu

**Math Presentation: Stem and Leaf Plot**

The book is about Exploratory Data Analysis(EDA). EDA is an approach to analyzing data sets to summarize their main characteristics, often with visual methods.

John Tukey

He was an American mathematician best known for development of the FFT algorithm and box plot.

Died on 26th of July, 2000

In the 1980's, right after the publication of John Tukey's book, the stem and leaf plot became known worldwide

Step 1

Arrange all the numbers in ascending order

Stem and Leaf Plot

Step 2

10 11 12 20 21 22 30 31 32

Arranged In Ascending Order

11 21 12 22 30 32 31 10 20

Not Arranged in Ascending Order

Segregate each digit of a number based on their place values.

Tens, hundreds, thousands, etc. will be placed on the left side of the Plot, a.k.a. "STEM"

Stem

Leaf

1

Step 3

use 10 as an example

The ones digit are always placed on the right side of the plot, a.k.a. "LEAF"

10=

10=

1

0

Stem

Leaf

People tend to organize numbers to avoid any confusion. There are many ways in organizing number, one famous and easy method is the "Stem and Leaf Plot".

**Quiz Game**

Make a stem and leaf plot from the following items.

**83, 25, 90, 36, 13, 64, 19, 09, 18, 63, 26, 64, 12**

YOU HAVE FIVE MINUTES TO FINISH

YOU HAVE TWO MINUTES TO FINISH