bar graph

Subject-Math's School-Kendriya Vidyalaya

DATADATA!!!!The information colleted in the The information colleted in the case is calledcase is called datadata..Types ofTypes of DATADATA

1. Primary data.2. Secondary data.

primary primary datadata & secondary & secondary data dataWhen an investigator collects data When an investigator collects data

himself with a definite plan or design in himself with a definite plan or design in his/her mind, it is calledhis/her mind, it is called primary dataprimary data..

Data which are not originally collected Data which are not originally collected by the investigator but they are by the investigator but they are obtained from published or unpublished obtained from published or unpublished sources are known assources are known as secondary data.secondary data.

What is What is graph graph ??????A diagram that shows relationships

between numbers. Graphs arrange numerical information into a picture from which it is often possible to see overall patterns or trends in the information is called graph.

Types of Types of graphgraph

There are three types of graphs:-1. Bar graph.2. Double bar graph.3. Pictograph.

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What isWhat is bar graph bar graph ??????

• A bar graph is a pictorial representation of the numerical data by a number of bars of uniform width erected horizontally or vertically with equally spacing between them.

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Example of bar graph.Example of bar graph.

Q. In a class of 30 pupils, the mathematics teacher creates the table below that gives the scores the pupils get in a test (the teacher scores the test from 0 to 20, and all the scores are whole numbers) draw a bar graph ?

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Solution.

What is double bar graph.

A bar graph showing two sets of data simultaneously. It is useful for comparison of data.

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Example of double bar graph.Example of double bar graph.

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Name English Hindi Maths Sst. Skt Science

Ajay 35 35 32 29 39 39

Ajay2 39 32 35 29 35 30

What is What is Pictograph Pictograph ??????

• A pictograph pictorial representation of data using symbols.

Example of Pictograph.Example of Pictograph.

July = 250

August =300

September =400

=100 cars one symbol stand for 100 cars 50 cars

# Made. By –Ajay Kumar #

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