Graph
Graph are visual representations of data collected.Data collected is a raw and it is converted to information by the use of different graphs.Data can also be presented in the form of a table.A graphical presentation is easier to understand.
Bar graph
A bar graph is used to show comparison among categories.It may consist of two or more parallel vertical (or horizontal) bars (rectangles).The bar graph here shows Aahna's Mathematics marks in the three unit tests.It helps you to compare her performance easily.She has shown good progress.
Double bar graph:
A double bar graph is a visual representations of information using two bars.The bars can be arranged vertically or horizontally.
A double bar graph is used to compare two data groups.The graph gives a comparative account of sales (in Rs) of various fruits over a two-day period.
A Pie graph (or a circle-graph):
A pie-graph is used to compare parts of a whole.The circle represents the whole.A Pie graph is also known as circle-graph.
Pie-graph shows the percentage of viewers watching different types of TV channels in the below Pie chart:
A Histogram
A Histogram is a bar graph that shows data in intervals.It has adjacent bars over the intervals.There are no gaps between bars, because there are no gaps between the intervals.The histogram in Fig illustrates the distribution of weights (in kg) of 40 persons of a locality.
A line graph
A line graph displays data that changes continuously over periods of time.A line graph which is a whole unbroken line is called a linear graph.
A line graph displays data that changes continuously over periods of time.Here in the graph below Garima fell sick, her doctor maintained a record of her body temperature, taken every four hours.It was in the form of a Line graph.
