Line Type of Graphs Bar Pie or circle

Line Type of Graphs: Bar Pie or circle

Line Graph: 1)Label each axis: Magnitude & units. x-axis --- Independent variable. y-axis --- Dependent variable.

Line Graph: 2) Choose the scale: - The graph should fill 75% or more on the graph paper. - Each space division should equal some convenient constant value easily divided by the eye (1, 5, 10, 15, 20. . ) - The axis scale does not need to start at “zero”.

Line Graph: 3) Plot each point (be accurate). 4) Draw a smooth curve: The curve must pass through or close to all points plotted.

Example: Draw a graph using the following data: Volume (m. L) Mass (g) 3 1. 3 5 2. 5 7 4. 0 10 5. 0 13 8. 0 16 9. 6 18 11. 0

12 10 Mass (g) 8 6 Series 1 Linear(Series 0) 4 2 0 0 2 4 6 8 10 Volume (m. L) 12 14 16 18 20

Bar Graph: 1) Label each axis: x – Independent Variable. y – Dependent variable. 2) Choose the scale: (75% or more of the graph paper must be covered) 3) Draw a vertical bar for each measured number.

Bar Graph: Ex: A recycling center collected 4. 0 kg of aluminum on Monday, 1. 0 kg on Wednesday, & 2. 0 kg on Friday. Create a bar graph using this data.

4, 5 4 3, 5 3 2, 5 2 1, 5 1 0, 5 0 Monday Wednesday Friday

Circle or Pie Graph: 1)Use a compass to draw a circle and to mark the center of the circle. 2) Draw a straight line from the center to the edge of the circle.

Circle or Pie Graph: 3) Find the angle of each section in the circle: angle = x 360 o 4) Use a protractor and the angles you calculate to divide the circle into parts.

Circle or Pie Graph: Example: Energy consumed in a house: Electric 10 %, coal 10 %, steam 25 %, gas 50 %, and other 5 %. Create a circle graph using this data.

Circle or Pie Graph: electric 10 % ÷ 100 x 360 o = 36 o coal 10 % ÷ 100 x 360 o = 36 o steam 25 % ÷ 100 x 360 o = 90 o gas 50 % ÷ 100 x 360 o = 180 o other 5 % ÷ 100 x 360 o = 18 o

Electric Coal Steam Gas Others