Bar Graph
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- Words: 455
- Pages: 14
Basic Competence
To make a graph based on the data of measurement, analyze, and communicate it.
Learning Objectives 1.
2.
3.
4.
Practice measuring the data to make a graph Create four graphs to comparing the data Analyze the graph based on the data Communicating the graph based on the data
Key Word 1. 2. 3. 4.
Bar Graph Pie Chart Line Graph Scatter Plot
Bar Graph The bar graph is sorted with the largest category first going to the smallest category.
BAR GRAPH Chart to show year 7 favourite types of m usic 20 Frequency
The frequency scale must start from 0 and go up in equal steps
15 10 5 0 Pop
Soul
Reggae
Type of m usic
Label both of the axes
Heavy metal
Bars should have equal width
The Data of Velocity Student Number Student Number 1 2 3 4 5 6 7 8 9 10
Velocity 59 35 46 43 47 37 31 39 41 42
Bar Graph Velocity 70% 60%
Velocity
50% S t u d e n t
N u m b e r
40%
Velocity
30% 20% 10% 0% 1
2
3
Student Number
4
5
6
7
8
9
10
Line Graph Line graphs compare two variables. Each variable is plotted along an axis . A line graph has a vertical axis and a horizontal axis
Graph to show a liquid cooling for 15 minutes. Time (minute)
Temperature (Kelvin)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
50 49 45 40 35 33 30 29 29 27 25 25 23 21 21 20
Line Graph a liquid cooling for 15 minutes.
Write the numbers against marks on the scale. Start at 0 and go up in equal steps.
Joint the points with straight lines or a smooth curve if the data changes steadily (we call this a continuous graph
Pie Chart
A pie Chart is made by representing the relative frequency of a category by an angle of a circle determined by : Angle of a category = Relative frequency of the category
Pie Chart Label each section with the frequency or percentage
Pie chart to show year 7 favourite types of music
Heavy metal 17%
Reggae 19%
Show what each sector represents
Pop 22%
Remember a title Pop Soul
Soul 42%
Reggae Heavy metal
Scatter Plots
Groups of data are best represented in a graph that is similar to a line graph and its called a Scatter Plot. As in a line graph, the data points are plotted on the graph using values on an X-axis and a Yaxis.
Scatter Plots 25.00% 20.00% 15.00% Velocity
10.00% 5.00% 0.00% 0
5
10
15
To make a graph based on the data of measurement, analyze, and communicate it.
Learning Objectives 1.
2.
3.
4.
Practice measuring the data to make a graph Create four graphs to comparing the data Analyze the graph based on the data Communicating the graph based on the data
Key Word 1. 2. 3. 4.
Bar Graph Pie Chart Line Graph Scatter Plot
Bar Graph The bar graph is sorted with the largest category first going to the smallest category.
BAR GRAPH Chart to show year 7 favourite types of m usic 20 Frequency
The frequency scale must start from 0 and go up in equal steps
15 10 5 0 Pop
Soul
Reggae
Type of m usic
Label both of the axes
Heavy metal
Bars should have equal width
The Data of Velocity Student Number Student Number 1 2 3 4 5 6 7 8 9 10
Velocity 59 35 46 43 47 37 31 39 41 42
Bar Graph Velocity 70% 60%
Velocity
50% S t u d e n t
N u m b e r
40%
Velocity
30% 20% 10% 0% 1
2
3
Student Number
4
5
6
7
8
9
10
Line Graph Line graphs compare two variables. Each variable is plotted along an axis . A line graph has a vertical axis and a horizontal axis
Graph to show a liquid cooling for 15 minutes. Time (minute)
Temperature (Kelvin)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
50 49 45 40 35 33 30 29 29 27 25 25 23 21 21 20
Line Graph a liquid cooling for 15 minutes.
Write the numbers against marks on the scale. Start at 0 and go up in equal steps.
Joint the points with straight lines or a smooth curve if the data changes steadily (we call this a continuous graph
Pie Chart
A pie Chart is made by representing the relative frequency of a category by an angle of a circle determined by : Angle of a category = Relative frequency of the category
Pie Chart Label each section with the frequency or percentage
Pie chart to show year 7 favourite types of music
Heavy metal 17%
Reggae 19%
Show what each sector represents
Pop 22%
Remember a title Pop Soul
Soul 42%
Reggae Heavy metal
Scatter Plots
Groups of data are best represented in a graph that is similar to a line graph and its called a Scatter Plot. As in a line graph, the data points are plotted on the graph using values on an X-axis and a Yaxis.
Scatter Plots 25.00% 20.00% 15.00% Velocity
10.00% 5.00% 0.00% 0
5
10
15
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