Q.1. What is meant by presentation of data?
Ans. The presentation of data means exhibition of the data in a clear and attractive manner such that they can be easily understood and analysed.
Q.2. When is it suitable to use textual presentation of data?
Ans. It is suitable to use textual presentation of data when the quantity of data is not too large.
Q.3. What is a table?
Ans. A table is the organisation of data in rows and columns.
Q.4. Define tabulation?
Ans. Tabulation involves an orderly and systematic presentation of numerical data to elucidate the problem under consideration.
Q.5. Name the classifying variable in temporal classification.
Ans. Time is the classifying variable in temporal classification.
Q.6. Give the examples of classifying variables in spatial classification.
Ans. The examples of classifying variables in spatial classification are village, district, state and country, etc.
Q.7. List the main components of a table.
Ans. The main components of a table are:
(i) Table number
(iii) Captions or column headings
(iv) Stubs or row headings
(v) Body of the table
(vi) Unit of measurement
(vii) Source note
Q.8. Write a feature of the ‘title’ of a table.
Ans. The title of a table has to be very clear, brief and carefully chosen so that clear interpretations could be derived from the table.
Q.9. Give another name for column and row heading in the table.
Ans. Column heading is also known as caption and row heading is also known as stub.
Q.10. How is the location of a figure determined in a table?
Ans. The location of a figure in a table is determined by the row and column of the table.
Q.11. State the advantages and disadvantages of textual presentation of data.
Ans. Advantages of Textual Presentation of Data
(i) It provides useful and supportive evidence to the text in case of small volume of data.
(ii) It enables one to emphasise the important points of the presentation.
Disadvantage of Textual Presentation of Data
(i) It requires going through the complete text to draw facts.
Q.12. Write the important features of tabulation.
Ans. The important features of tabulation are as below:
(i) It organises the raw data, making it easy and definite.
(ii) It makes data comparable.
(iii) It facilitates calculation of statistical indices and data analysis.
(iv) It clearly indicates the features of the data.
Q.13. Explain the various types of tables.
Ans. The various types of tables are explained below:
(i) One-way Table: This type of table presents only single characteristic of the data. For example, a table showing the number of students in a college.
(ii) Two-way Table: It presents two features of data simultaneously. For example, a table showing the male and female population of a village.
(iii) Three-way Table: This table presents three features of the data. For example, presentation of population of a village on the basis of age, gender and education.
Q.14. What are the features of a good table?
Ans. The following are the important features of a good table:
(i) Title of the table should be according to the subject of study.
(ii) Row and column headings should be clear along with the units of measurements.
(iii) No short-forms should be used in the title, for example, govt. for government.
(iv) Footnote is to be given, if required.
(v) Combined total for every column and row should be given.
(vi) Complete information regarding numbers should be given in a table such as decimal point up to which value has been taken.
(vii) Source of data should always be mentioned below the table.
(viii) Table should be simple and easy to understand.
Q.15. What is diagrammatic presentation of data?
Ans. In diagrammatic presentation, data is presented in the form of diagrams, figures, graphs, etc. to provide quickest understanding of the real situation.