Graphs
Graphs are visual representations of data collected. They often helped us in showing the trend of the data
Various type of Common Graphs
Bar Graph
A
bar graph is used to show comparison among categories
Pie Chart
A circle graph shows the relationship between a whole and its part
Histograms
A Histogram is a bar graph that shows data in intervals. It has adjacent bars over the intervals
line graph
A
line graph displays data that changes continuously over periods of time.
linear graph.
A line graph which is a whole unbroken line is called a
linear graph
Solved Examples on Graphs
Draw the Line Graph for the following
a)
Sales (crore)
|
10
|
15
|
20
|
15
|
25
|
Year
|
2013
|
2014
|
2015
|
2016
|
2017
|
b)
Time
|
10
|
11
|
12
|
13
|
14
|
Temperature
|
250C
|
260C
|
300C
|
350C
|
400C
|
Solution
a)
b)
Cartesian system
The system of fixing a point with the help of two measurements, vertical and horizontal is known as Cartesian system
Important points
1) The horizontal axis is called X-axis
2) The vertical axis is called the Y-axis
3) O is the origin
4) Any point is depicted by distance from both the axis
5) The horizontal distance is called the x-coordinate
6) The vertical distance is called the y -coordinate
Example
Find the coordinates of the each of the point in the given below figure
Solution
A( 4,5)
B(5,0)
C(3,3)
D( 1,2)
E(2,1)
F(5.5,0)
G( 2,0)
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