RS Agarwal Solution | Class 6th | Chapter-22 | Data Handling| Edugrown

Exercise 22A

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Question 1:

Define the terms:
(i) Data
(ii) Raw data
(iii) Array
(iv) Tabulation of data
(v) Observations
(vi) Frequency of an observation
(vii) Statistics

ANSWER:

(i) Data: It refers to the information in the form of numerical figures.

The marks obtained by 5 students of a class in a unit test are 34, 45, 65, 67, 87.

We call it the data related to the marks obtained by 5 students of a class in a unit test.
             
(ii) Raw Data: Data obtained in the original form is called raw data.

(iii) Array: Arranging the numerical figures in an ascending or a descending order is called an array.

(iv) Tabulation of data: Arranging the data in a systematic form in the form of a table is called tabulation or presentation of the data.

(v) Observations: Each numerical figure in a data is called an observation.

(vi) Frequency of an observation: The number of times a particular observation occurs is called its frequency.

(viii) Statistics: It is the science that deals with the collection, presentation, analysis and interpretation of numerical data.

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Question 2:

The number of children in 25 families of a colony are give below:
2, 0, 2, 4, 2, 1, 3, 3, 1, 0, 2, 3, 4, 3, 1, 1, 1, 2, 2, 3, 2, 4, 1, 2, 2.
Represent the above data in the form of a frequency distribution table.

ANSWER:

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Question 3:

The sale of shoes of various sizes at a shop on a particular day is given below:
6, 9, 8, 5, 5, 4, 9, 8, 5, 6, 9, 9, 7, 8, 9, 7, 6, 9, 8, 6, 7, 5, 8, 9, 4, 5, 8, 7.
Represent the above data in the form of a frequency distribution table.

ANSWER:

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Question 4:

Construct a frequency table for the following:
3, 2, 5, 4, 1, 3, 2, 2, 5, 3, 1, 2, 1, 1, 2, 2, 3, 4, 5, 3, 1, 2, 3.

ANSWER:

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Question 5:

Construct a frequency table for the following:
7, 8, 6, 5, 6, 7, 7, 9, 8, 10, 7, 6, 7, 8, 8, 9, 10, 5, 7, 8, 7, 6.

ANSWER:

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Question 6:

Fill in the blanks:
(i) Data means information in the form of …… .
(ii) Data obtained in the …… form is called raw data.
(iii) Arranging the numerical figures in an ascending or a descending order is called an ……. .
(iv) The number of times a particular observation occurs is called its …… .
(v) Arranging the data in the form of a table is called …… .

ANSWER:

(i) Data means information in the form of numerical figures.
(ii) Data obtained in the original form is called raw data.
(iii) Arranging the numerical figures in an ascending or a descending order is called an  array.
(iv) The number of times a particular observation occurs is called its frequency.
(v) Arranging the data in the form of a table is called tabulation of data.