Stem-and-Leaf Plot and Scatter Plot

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By: Mr. Menjivar
Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
15L
15R
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
Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
15L
Standard:
15R
Statistics 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
Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
Standard:
Objective:
15L
15R
To interpret scatter plots
 To use scatter plots to find trends
 To make stem-and-leaf plots

Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
Standard:
Objective:
Vocabulary:
15L
15R
The graph displays numerical
data arrange in order. Each data
item is broken into a stem and a
leaf.
A graph that shows the relationship
between two sets of data.
Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
Standard:
Objective:
Vocabulary:
Notes/Examples:
15L
15R
Make a stem-and-leaf plot for the data
51, 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?
Step 2: Draw the stem-and-leaf plot
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
Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
Standard:
Practice:
Objective:
Vocabulary:
Notes/Examples:
15L
15R
As the distance from school increases,
what happens to the amount of time it
takes to get to school?
Is there a positive correlation, a
negative correlation, or no correlation
between the distance?
Explain what the point (0.5, 10)
represents.
How many students take longer than
35 min. to get to school?
Observe,
Question,
Comment
09/27/11
09/27/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
Standard:
Practice:
Objective:
Independent Practice:
Vocabulary:
Notes/Examples:
15L
15R
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
Observe,
Question,
Comment
09/26/11
09/26/11
Stem-and-Leaf Plot & Scatter Plot
Stem-and-Leaf Plot &
Scatter Plot Reflection
Warm-Up:
Standard:
Practice:
Objective:
Independent Practice:
Vocabulary:
Homework:
Notes/Examples:
15L
15R

Workbook Pg. 487 [1-6]
[Due: Next Meeting]
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