Chapter 24. Data and Their Representations NIOS Class 10 Mathematics Chapter-Wise Important Questions and Answers

Chapter 24. Data and Their Representations | NIOS Class 10 Mathematics Important Questions, Fully Solved Answers, and Chapter-wise Exam Preparation Guide.

Chapter 24. DATA AND THEIR REPRESENTATIONS

CHECK YOUR PROGRESS 24.1

 

Optional Questions and Answers for Algebraic Expressions and Polynomials [1 Mark]

CHECK YOUR PROGRESS 3.1

Short Questions and Answers for Algebraic Expressions and Polynomials [1 or 2 Marks]

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Long Questions and Answers for Algebraic Expressions and Polynomials [ 3 or 4 Mark]

1. Fill in the blanks with suitable word(s) so that the following sentences give the proper meaning:

(a) Statistics, in singular sense, means the subject which deals with _______, _____, analysis of data as well as drawing of meaningful _______ from the data.

(b) Statistics is used, in a plural sense, meaning _______________.

(c) The data are said to be __________ if the investigator himself is responsible for its collection.

(d) Data taken from governmental or private agencies in the form of published reports are called __________ data.

(e) Statistics is the science which deals with collection, organisation, analysis and interpretation of the ____________.

Answer: (a) Statistics, in singular sense, means the subject which deals with classification, organisation , analysis of data as well as drawing of meaningful inferences from the data.

(b) Statistics is used, in a plural sense, meaning numerical data .

(c) The data are said to be primary if the investigator himself is responsible for its collection.

(d) Data taken from governmental or private agencies in the form of published reports are called  secondary data.

(e) Statistics is the science which deals with collection, organisation, analysis and interpretation of the  numerical data .

 

2. Javed wanted to know the size of shoes worn by the maximum number of persons in a locality. So, he goes to each and every house and notes down the information on a sheet. The data so collected is an example of ___________ data.

Answer: Javed wanted to know the size of shoes worn by the maximum number of persons in

a locality. So, he goes to each and every house and notes down the information on a

sheet. The data so collected is an example of primary data.

3. To find the number of absentees in each day of each class from I to XII, you collect the information from the school records. The data so collected is an example of ___________ data.

Answer: To find the number of absentees in each day of each class from I to XII, you collect the information from the school records. The data so collected is an example of secondary data.

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