DATA PRESENTATION
CONTENT
(i) Line graph (ii) Bar graph (iii) Histograms(iv) Pie Chart (v) frequency polygon (vi) Deductions and Interpretations.
LINE GRAPH
Line graphs are used to show trends over a period of time and have the advantage that they can be extended. To draw a line graph, plot the given data as a series of points and then join the points together by straight lines. The lines can be drawn vertically or horizontally and have no thickness.
Example 1
A comparison of traffic densities in a number of countries produced the following results.
Present the data in a line graph
Solution:
Example 2:
The table below shows the number of eggs laid in one month by 5 hens. Draw a horizontal line graph for the data.
Class Activity:
1. The student population of the Federal Government college Kano was recorded as follows.
Plot the line graph of the above data.
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ClassHall Instructor
Ezimeruwe Oghenekaro
Halima Ahmadu
Sadiq Barau