What is Line Graph

this presentation is about line graph. in this presentation we will study about the line graph, its parts and its different types.

1. Line graph Prepared by: Asad khan B.S Botany 4 th Semester

2. Line graph A line graph is a diagram that shows a line joining several points, or a line that shows the relationship between the points. A line graph can be taken as x-y plane, where there will be an independent variable and a dependent variable and it specifies how the two variables are related to each other and vary with respect to one another. Mostly, the independent variable is taken on the x-axis while the dependent variable on the y-axis.

3. Parts of Line graph Various parts of the line graph: Title:  the title is explains what the graph is about. Scale:  the scale is the numbers that show the units used on the line graph. Labels:  both the side and the bottom of the line graph have a label that tells what kind of data is shown. X-axis describe what each data point on the line represents and y-axis shows the numeric value for each point on the line. Line :   Connect all data points . Point:   Represent the data amount.

4. Make a line graph Steps to make a line graph: Step 1:  use the data from the table to choose an appropriate scale. Step 2:  draw and label the scale on the vertical and horizontal axis.  Step 3:  list the each item and locate the points on the graph. Step 4:  connect the points with line segments

5. Example of line graph Question:  the table given below shows the weights of a set of people . Draw a line graph for the given data. Months Weights (in Kg) 1 38 3 41 5 43 7 49 9 51 11 54

6. Solution The data as per given in the table above has been summarized in the form of a line graph below .

7. Example#2 The table shows the daily earnings of a store for five days. Construct a line graph for the frequency table. DAYS EARNINGS Monday 300 Tuesday 450 Wednesday 200 Thursday 400 Friday 650

8. solution

9. Example#3 The table shows the daily sales in RM of different categories of items for five days . Construct a line graph for the frequency table. Day Drinks Food Monday 300 400 Tuesday 450 500 Wednesday 150 350 Thursday 400 300 Friday 650 500

10. solution

11. Types of line graph Line graph have one or more lines plotted on the graph. They are very useful for showing change over time. Simple line graph Multiple line graph Compound line graph Vertical line graph Horizontal line graph Straight line graph Double line graph Inequality line graph Interpreting line graph

12. Simple Line Graph  Only one line is plotted on the graph .

13.  Multiple Line Graph More than one line is plotted on the same set of axis. A multiple line graph can effectively compare similar items over the same period of time.

14. Compound line chart  If information can be subdivided into two or more types of data. This type of line graph is called a compound line graph. Lines are drawn to show the component part of a total. The top line shows the total and line below shows part of the total. The distance between each two lines shows the size of each part.

15. Vertical Line Graph Vertical line graphs are graphs in which a vertical line extends from each data point down to the horizontal axis. Vertical line graph sometime also called as column graph. A line parallel to the y-axis is called a vertical line.

16. Horizontal Line Graph Horizontal line graphs are graphs in which a horizontal line extends from each data point parallel to the earth. Horizontal line graph sometime also called as row graph. A line parallel to the x-axis is called a vertical line.

17. DOUBLE LINE GRAPH A double line graph is a line graph with two line. A graph that compares two different subjects over a period of time. A double line graph shows how things change over a period of time. Double line graph show two line graphs within one chart. Double line graph are used to compare trends and patterns b/w two subjects.

18. REFERENCE www.google.com www.slideshare.net www.wikipedia.org https://math.tutorvista.com/statistics/line-graphs.html

19. . THE end

20. Prepared by: Asad khan Thank you