Stem-and-Leaf Plot and Scatter Plot

By: Mr. Menjivar

Stem-and-Leaf Plot & Scatter Plot

15R15L

09/27/11Stem-and-Leaf Plot &Scatter Plot Reflection

09/27/11Observe,Question,Comment

Warm-Up:

What is the difference between the median number of turkey sandwiches sold and the median number of ham sandwiches sold?

A. 0

B. 1

C. 2

D. 3

Warm-Up

Stem-and-Leaf Plot & Scatter Plot

15R15L

Stem-and-Leaf Plot &Scatter Plot Reflection

Observe,Question,Comment

Warm-Up: Standard:

09/27/1109/27/11

Content StandardsStatistics Data Analysis and Probability 1.1 Know various forms of display for data sets

Statistics, Data Analysis, and Probability 1.2 Informally describe how the data points are distributed and any apparent relationship that exists between the two variables

Stem-and-Leaf Plot & Scatter Plot

15R15L

Stem-and-Leaf Plot &Scatter Plot Reflection

Observe,Question,Comment

Warm-Up: Standard:

Objective:

09/27/1109/27/11

Objective:

To interpret scatter plots To use scatter plots to find trends To make stem-and-leaf plots

Stem-and-Leaf Plot & Scatter Plot

15R15L

Stem-and-Leaf Plot &Scatter Plot Reflection

Observe,Question,Comment

Warm-Up: Standard:

Objective:

Vocabulary:

09/27/1109/27/11

Vocabulary:Stem-and-Leaf Plot

The graph displays numerical data arrange in order. Each data item is broken into a stem and a

leaf.

Vocabulary:Scatter Plot

A graph that shows the relationship between two sets of data.

Stem-and-Leaf Plot & Scatter Plot

15R15L

Stem-and-Leaf Plot &Scatter Plot Reflection

Observe,Question,Comment

Warm-Up: Standard:

Objective:

Vocabulary:

Notes/Examples:

09/27/1109/27/11

Example 1Making Stem-and-Leaf Plots

Make a stem-and-leaf plot for the data51, 56, 67, 44, 50, 63, 65, 58, 49, 51, 66, 59, 63, 47

Step 1: Choose the stems. What is the least value?

What is the greatest value?

What are the stems?

Example1[continued…]Step 2: Draw the stem-and-leaf plot

Example 2

Below are the monthly high temperatures for Death Valley California.

Make a stem-and-leaf plot for the data.87, 91, 101, 111, 120, 125, 134, 126, 120, 113, 97, 86

Let’s Look At Page 630

Stem-and-Leaf Plot & Scatter Plot

15R15L

Stem-and-Leaf Plot &Scatter Plot Reflection

Observe,Question,Comment

Warm-Up: Standard:

Objective:

Vocabulary:

Notes/Examples:

Practice:

09/27/1109/27/11

PracticeAs the distance from school increases, what happens to the amount of time it takes to get to school?

PracticeIs there a positive correlation, a negative correlation, or no correlation between the distance?

PracticeExplain what the point (0.5, 10) represents.

PracticeHow many students take longer than 35 min. to get to school?

Stem-and-Leaf Plot & Scatter Plot

15R15L

Stem-and-Leaf Plot &Scatter Plot Reflection

Observe,Question,Comment

Warm-Up: Standard:

Objective:

Vocabulary:

Notes/Examples:

Practice:

Independent Practice:

09/27/1109/27/11

Independent Practice

Make a stem-and-leaf plot of each data set.

1) 54, 48, 52, 53, 67, 61, 68, 49, 40, 50, 69, 73, 74, 76, 78

2) 124, 129, 131, 116, 138, 107, 105, 116, 122, 137, 138, 134

Stem-and-Leaf Plot & Scatter Plot

15R15L

09/26/11Stem-and-Leaf Plot &Scatter Plot Reflection

09/26/11Observe,Question,Comment

Warm-Up: Standard:

Objective:

Vocabulary:

Notes/Examples:

Practice:

Independent Practice:

Homework:

Homework Workbook Pg. 487 [1-6]

[Due: Next Meeting]