Frequency Table and Histogram of Classified Data

IMPORTANT

Frequency Table and Histogram of Classified Data: Overview

This Topic covers sub-topics such as Characteristics of a Histogram, Histogram of Grouped Data, Understanding an Histogram and, Construction of Histograms

Important Questions on Frequency Table and Histogram of Classified Data

MEDIUM
IMPORTANT

Draw the histogram for the following data.

Class interval 0 - 10 10 - 20 20 - 30 30 - 40 40 - 50
Frequency 3 7 10 6 4

 

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Draw Histogram of the given data.

Weight 40-45 45-50 50-55 55-60 60-65
No.of persons 4 12 13 6 5

 

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Draw a histogram for the data shown in the table.

Number of students 0-3 3-6 6-9 9-12 12-15 15-18
Number of days 30 40 45 20 15 10

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IMPORTANT

Draw a histogram diagram for the data shown in the table.

Diameter in cm 1.3-1.4 1.4-1.5 1.5-1.6 1.6-1.7 1.7-1.8
Frequency 19 25 33 16 12

EASY
IMPORTANT

Identify the scale of below histogram

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EASY
IMPORTANT

Identify the scale of below histogram

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MEDIUM
IMPORTANT

Identify the scale used in the histogram given below.

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HARD
IMPORTANT

The table shows the times of 30 children took to complete a long distance race. Draw a histogram of this.

 Time (min) Number of children 10-13x413-16516-191219-22x22-253

Obtain the range of the data

HARD
IMPORTANT

The table below given the amount of water 50 households are

 Amount of water  (litres)  Number of households 0-5003500-1000x21000-150071500-2000x2000-2500142500-300083000-35003 Total 50

See how this data is represented by a histogram. Also obtain the range of the data

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IMPORTANT

The weights in kg of 30 students of a class are

39,43,32,37,29,26,31,45,46,31,37,38,30,39,36,41,35,34,41,46,39,38,36,38,40,42,33,43,44,33

Prepare a frequency distribution table using one class interval as 30-35, in which 30 is included and 35 excluded. Which class interval has highest frequency.

MEDIUM
IMPORTANT

The ages (in years) of 360 patients treated in a hospital on a particular day are given below:

Age (in years) 10-20 20-30 30-40 40-50 50-60 60-70
Number of patients 90 40 60 20 120 30

Which age group has the highest number of patients.

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Frequency curve is drawn from frequency polygon by smoothening the vertices.

MEDIUM
IMPORTANT

The following table shows the number of illiterate persons in the age group (10-58 years) in a town. How many illiterates are there in the age group 34-42.

Age group (in years) 10-18 18-26 26-34 34-42 42-50 50-58
Number of illiterate persons 175 325 100 150 250 525

EASY
IMPORTANT

In the histogram width of the bars need not be same whereas in the bar graphs widths are same.

MEDIUM
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 Draw a histogram and hence estimate the mode for the following frequency distribution:

 Class 0-1010-2020-3030.-4040-5050-60 Frequency 2810543

 

MEDIUM
IMPORTANT

Following histogram shows the number of people owning the different number of books.

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The number of people owning books more than 60 is _____.

EASY
IMPORTANT

Histograms of the daily wages of the employees working in a factory are given. Answer the following questions on the basis of histograms.

How many employees are the highest paid per day?

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EASY
IMPORTANT

Histograms of the daily wages of the employees working in a factory are given. Answer the following questions on the basis of histograms.

How many employees earn Rs.80 per day or get paid more than that?

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IMPORTANT

Histograms of daily wages of employees working in a factory are given. Answer the following questions on the basis of histograms.

How many employees get paid less than 100 per day?

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EASY
IMPORTANT

A Histogram of the daily wages of employees working in a factory is given below. Answer the following questions on the basis of histograms.

How many employees are getting a salary between 90 and 120?

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