# Histograms

- Created by: leah
- Created on: 18-05-13 18:34

## Slides in this set

### Slide 1

Objective: To draw a histogram.

Histograms

5.0

On a histogram the

frequency is shown by the

4.0 AREA of the bars.

3.0

Frequency

density

Area = 1.5 x 20 = 30

2.0 20

There are 30 people between

1.0 the ages of 50 and 70.

1.5

0

20 40 60 80 100

Age( A years)

J. Chandarana & Lesley Hall @ Soar Valley College…read more

### Slide 2

Objective: To draw a histogram.

Histograms

5.0

To draw a histogram we

first need to work out the

4.0 frequency density.

3.0

Frequency

Frequency density = frequency

density

class interval

2.0 20

1.0

f. d. = 30 ÷ 20 = 1.5

30

0

20 40 60 80 100

Age( A years)

J. Chandarana & Lesley Hall @ Soar Valley College…read more

### Slide 3

Objective: To draw a histogram.

Histograms

add a column to work

Draw a histogram for this data

out frequency density

Age ( A years) Frequency Frequency density

0 A < 20 28 28 ÷ 20 = 1.4

20 A < 30 36

36 ÷ 10 = 3.6

30 A < 40 48 48 ÷ 10 = 4.8

40 A < 50 20

20 ÷ 10 = 2

50 A < 70 30 30 ÷ 20 = 1.5

70 A < 100 15 15 ÷ 30 = 0.5

Frequency density = frequency

class interval

J. Chandarana & Lesley Hall @ Soar Valley College…read more

### Slide 4

Objective: To draw a histogram.

Histograms

Age

5.0 F.d

(A years)

0 A < 20 1.4

4.0

20 A < 30 3.6

3.0

Frequency

30 A < 40 4.8

density

2.0 40 A < 50 2

1.0 50 A < 70 1.5

0 70 A < 100 0.5

20 40 60 80 100

Age( A years)

J. Chandarana & Lesley Hall @ Soar Valley College…read more

## Similar Mathematics resources:

# Histograms

- Created by: leah
- Created on: 18-05-13 18:34

## Slides in this set

### Slide 1

Objective: To draw a histogram.

Histograms

5.0

On a histogram the

frequency is shown by the

4.0 AREA of the bars.

3.0

Frequency

density

Area = 1.5 x 20 = 30

2.0 20

There are 30 people between

1.0 the ages of 50 and 70.

1.5

0

20 40 60 80 100

Age( A years)

J. Chandarana & Lesley Hall @ Soar Valley College…read more

### Slide 2

Objective: To draw a histogram.

Histograms

5.0

To draw a histogram we

first need to work out the

4.0 frequency density.

3.0

Frequency

Frequency density = frequency

density

class interval

2.0 20

1.0

f. d. = 30 ÷ 20 = 1.5

30

0

20 40 60 80 100

Age( A years)

J. Chandarana & Lesley Hall @ Soar Valley College…read more

### Slide 3

Objective: To draw a histogram.

Histograms

add a column to work

Draw a histogram for this data

out frequency density

Age ( A years) Frequency Frequency density

0 A < 20 28 28 ÷ 20 = 1.4

20 A < 30 36

36 ÷ 10 = 3.6

30 A < 40 48 48 ÷ 10 = 4.8

40 A < 50 20

20 ÷ 10 = 2

50 A < 70 30 30 ÷ 20 = 1.5

70 A < 100 15 15 ÷ 30 = 0.5

Frequency density = frequency

class interval

J. Chandarana & Lesley Hall @ Soar Valley College…read more

### Slide 4

Objective: To draw a histogram.

Histograms

Age

5.0 F.d

(A years)

0 A < 20 1.4

4.0

20 A < 30 3.6

3.0

Frequency

30 A < 40 4.8

density

2.0 40 A < 50 2

1.0 50 A < 70 1.5

0 70 A < 100 0.5

20 40 60 80 100

Age( A years)

J. Chandarana & Lesley Hall @ Soar Valley College…read more

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