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Class 11 Economics Short Questions and Answers: Organisation of Data - 2

Q.16. Define series.
Ans. 
A series, as used statistics, may be defined as things or attributes of things arranged according to some logical order.

Q.17. State one feature of inclusive series?
Ans. 
Inclusive method does not exclude the upper class limit in a class interval and hence, both class limits are parts of the class interval.

Q.18. What is an open-end series?
Ans.
In open-end series, either the lower limit of the first class interval or the upper limit of the last class interval is missing.

Q.19. Write one function of tally marks.
Ans. 
Tally marks keep quick track of numbers in groups of five.

Q.20. What are the two ends of a class called?
Ans. 
The two ends of a class are called class limits.

Q.21. Give another name for class interval.
Ans.
Class width is another name for class interval.

Q.22. Define range.
Ans. 
Range is the difference between the largest and the smallest value of a variable.

Q.23. Write a short note on ‘range’.
Ans.
Range is the difference between the largest and the smallest values of the variable. A large range indicates that the values of the variable are widely spread while a small range indicates that the values of the variable are narrowly spread. If the class intervals are equal then range is the product of the number of classes and class interval of a single class. Range = Number of Classes × Class Interval

Q.24. When is frequency distribution with unequal classes more appropriate?
Ans. 
When the classes are to be formed in such a way that class marks coincide to a value around which the observations in a class tend to concentrate then it is more appropriate to use unequal class interval.

Q.25. Why is there no class mark in a discrete frequency distribution?
Ans. 
Frequency array is the classification of data related to discrete variables. A discrete variable takes only integral values, that is, it does not take any fractional value between two adjacent integral values. Thus, there are no classes in a frequency array. Absence of classes implies no class intervals. Since the classes are absent in a discrete frequency distribution, there is no class mark as well.

Q.26. What is the principal objective of classification of data?
Ans. 
The principal objective of classification of data is to capture and distinctively present the diverse features of data. It is not done in an arbitrary manner and hence, saves time and effort.

The document Class 11 Economics Short Questions and Answers: Organisation of Data - 2 is a part of the Commerce Course Economics Class 11.
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FAQs on Class 11 Economics Short Questions and Answers: Organisation of Data - 2

1. What is data organization?
Data organization refers to the process of arranging and structuring data in a systematic and meaningful manner. It involves categorizing, sorting, and classifying data to make it easier to retrieve and analyze.
2. Why is data organization important?
Data organization is important because it helps in efficient data management. It allows easy access to information, reduces redundancy, improves data quality, and enhances data analysis. Well-organized data enables businesses and individuals to make informed decisions and derive meaningful insights.
3. What are some common methods of organizing data?
Some common methods of organizing data include: 1. Hierarchical organization: Data is structured in a tree-like format, with parent-child relationships between data elements. 2. Relational organization: Data is organized into tables with predefined relationships between them using keys. 3. Network organization: Data is organized based on complex relationships, with multiple access paths. 4. Object-oriented organization: Data is organized as objects that encapsulate both data and behavior. 5. File-based organization: Data is organized in files and directories, similar to how files are organized in a computer's file system.
4. How can data be organized in a spreadsheet?
In a spreadsheet, data can be organized by using columns and rows. Each column represents a specific attribute or variable, while each row corresponds to a separate data entry. By structuring data in this tabular format, it becomes easier to sort, filter, and analyze the data using various functions and formulas available in the spreadsheet software.
5. What are the benefits of using a database management system for data organization?
Using a database management system (DBMS) for data organization offers several benefits, including: 1. Data integrity: DBMS ensures data integrity by enforcing data constraints and preventing unauthorized access. 2. Data security: DBMS provides robust security mechanisms to protect sensitive data from unauthorized access or breaches. 3. Data consistency: DBMS ensures consistency by maintaining the integrity of data across multiple tables and relationships. 4. Data scalability: DBMS allows for the efficient storage and retrieval of large volumes of data, making it suitable for growing businesses. 5. Data accessibility: DBMS offers easy and quick access to data through query languages, enabling users to retrieve and manipulate data efficiently.
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