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  1. 9th
  2. Maths
  3. Statistics
  4. Graphical Representation of Data

Graphical Representation of Data

Statistics
Maths
Class 9

Overview

Quick summary with Stories

Revise with Concepts

Introduction to Histograms

ExampleDefinitionsFormulaes

Histograms for Non-Uniform Class Widths

ExampleDefinitionsFormulaes

Frequency Polygons

ExampleDefinitionsFormulaes

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Related Questions to study

For which of these would you use a histogram to show the data?
The number of letters for different areas in a postman's bag.
The height of competitors in an athletics meet.
The number of cassettes produced by companies.
The number of passengers boarding trains from a.m. to p.m. at a station.
Give reasons for each.

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Draw a histogram for the frequency table made for data in Question , and answer the following question:
How many houses pay less than ?

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Draw frequency polygon for the following histogram.

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Construct frequency polygon for the following table.
 HourTemperature 

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The histogram shows the birth weights of 100 new born babies.
How many babies weighed 8 lb or more?

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The birth rate per thousand in five countries over a period of time is shown below.
Represent the data by a bar graph.
CountryChinaIndiaGermanyUKSweden
Birth rate per thousand

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What is the shape of this histogram?

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To draw a histogram to represent the following frequency distribution:
Class Interval 





Frequency





the adjusted frequency for the class is:

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In a botanical garden, the numbers of different
types of plants are found as follows: 
Draw a bar graph to represent the above information and
answer the following questions: 

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_________ comprises a group of equispaced and equiwidth rectangular bars for each class or category of data.

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