SECTION 1-3Histograms and Stem-and-Leaf Plots

Essential QuestionsHow do you use and create histograms to solve problems?

How do you use and create stem-and-leaf plots to solve problems?

Where you’ll see this:

Education, statistics, inventory, sports, entertainment

Vocabulary1. Frequency:

2. Histogram:

3. Stem-and-leaf Plot:

4. Outliers:

5. Clusters:

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram:

3. Stem-and-leaf Plot:

4. Outliers:

5. Clusters:

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram: A bar graph with no space between the bars

3. Stem-and-leaf Plot:

4. Outliers:

5. Clusters:

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram: A bar graph with no space between the bars

3. Stem-and-leaf Plot: The leaf is the right-most digit in the number, and the stem is the other digits;

4. Outliers:

5. Clusters:

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram: A bar graph with no space between the bars

3. Stem-and-leaf Plot: The leaf is the right-most digit in the number, and the stem is the other digits; The stem is on one side of a bar and the leaves on the other

4. Outliers:

5. Clusters:

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram: A bar graph with no space between the bars

3. Stem-and-leaf Plot: The leaf is the right-most digit in the number, and the stem is the other digits; The stem is on one side of a bar and the leaves on the other

4. Outliers: Values that are much larger or smaller than the rest

5. Clusters:

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram: A bar graph with no space between the bars

3. Stem-and-leaf Plot: The leaf is the right-most digit in the number, and the stem is the other digits; The stem is on one side of a bar and the leaves on the other

4. Outliers: Values that are much larger or smaller than the rest

5. Clusters: Groups of values that are not close to the rest of the data

6. Gaps:

Vocabulary1. Frequency: Shows the number of times a number appears or

numbers in an interval appear

2. Histogram: A bar graph with no space between the bars

3. Stem-and-leaf Plot: The leaf is the right-most digit in the number, and the stem is the other digits; The stem is on one side of a bar and the leaves on the other

4. Outliers: Values that are much larger or smaller than the rest

5. Clusters: Groups of values that are not close to the rest of the data

6. Gaps: Large spaces between values

Organizing Data13 25 43 50 23 33 31 24 54 11 3 26

46 43 23 45 14 19 29 21 25 43 12 15

Which interval has the most scores? The least?

Organizing Data13 25 43 50 23 33 31 24 54 11 3 26

46 43 23 45 14 19 29 21 25 43 12 15

Which interval has the most scores? The least?

Organizing Data13 25 43 50 23 33 31 24 54 11 3 26

46 43 23 45 14 19 29 21 25 43 12 15

Score 1-7 8-14 15-21 22-28 29-35 36-42 43-49 50-56

Freq. 1 4 3 6 3 0 5 2

Which interval has the most scores? The least?

Organizing Data13 25 43 50 23 33 31 24 54 11 3 26

46 43 23 45 14 19 29 21 25 43 12 15

Score 1-7 8-14 15-21 22-28 29-35 36-42 43-49 50-56

Freq. 1 4 3 6 3 0 5 2

Which interval has the most scores? The least?

Organizing Data13 25 43 50 23 33 31 24 54 11 3 26

46 43 23 45 14 19 29 21 25 43 12 15

Score 1-7 8-14 15-21 22-28 29-35 36-42 43-49 50-56

Freq. 1 4 3 6 3 0 5 2

Which interval has the most scores? The least?

Most: 22-28

Organizing Data13 25 43 50 23 33 31 24 54 11 3 26

46 43 23 45 14 19 29 21 25 43 12 15

Score 1-7 8-14 15-21 22-28 29-35 36-42 43-49 50-56

Freq. 1 4 3 6 3 0 5 2

Which interval has the most scores? The least?

Most: 22-28 Least: 36-42

Histograms on the TI-83/84

Histograms on the TI-83/84

Histograms on the TI-83/84

Histograms on the TI-83/84

Histograms on the TI-83/84

Histograms on the TI-83/84

Histograms on the TI-83/84

Stem-and-Leaf

Stem-and-Leaf

Stem-and-Leaf

Stem-and-Leaf

Stem-and-Leaf

Stem-and-Leaf

012345

Stem-and-Leaf

012345

3

Stem-and-Leaf

012345

31 2 3 4 5 9

Stem-and-Leaf

012345

31 2 3 4 5 91 3 3 4 5 5 6 9

Stem-and-Leaf

012345

31 2 3 4 5 91 3 3 4 5 5 6 91 3

Stem-and-Leaf

012345

31 2 3 4 5 91 3 3 4 5 5 6 91 33 3 3 5 6

Stem-and-Leaf

012345

31 2 3 4 5 91 3 3 4 5 5 6 91 33 3 3 5 60 4

Stem-and-Leaf

012345

31 2 3 4 5 91 3 3 4 5 5 6 91 33 3 3 5 60 4

*Key: 4 2 = 42

Answer on Your Own

1. What is the difference between a histogram and a bar graph?

2. What would be the stem and leaf of the following number: 45.3

Problem Set

Problem Set

p. 18 #1-25

“The secret of success in life is for a man to be ready for his opportunity when it comes.” - Earl of Beaconsfield