## RD Sharma Solutions for Class 7 Maths Chapter 22 - Data Handling I (Collection and organization of Data)

## FAQs on RD Sharma Class 7 Maths Solutions Chapter 22 - Data Handling-I

**1. Is Chapter 22 Data Handling of Class 7 RD Sharma Maths complicated to understand? **

Like any subject, Data Handling requires understanding and practice. Most of the concepts in this chapter are easy to understand but if you find yourself confused with this topic RD Sharma’s Solutions textbook is here to help. You can download this PDF free of cost from Vedantu’s website and mobile app. The solutions in this textbook are easy to understand. In data handling, you learn how to access and analyze the data. You will learn how to collect data and make it easy to understand.

**2. According to Chapter 22 of Class 7 RD Sharma Maths, what is the difference between primary and secondary data? **

Primary data is defined as the data that is collected first-hand by a researcher. Usually, this research is collected first hand by conducting surveys and finding out information directly from a source. For example, national surveys are primary data because the government collects them directly. Secondary data is data that is gained from other sources that collect the information. All secondary data is found from the findings of primary data. For example - Information for assignments from websites is secondary data.

**3. According to Chapter 22 of Class 7 RD Sharma Maths, what is data construction? **

In simple words, data construction is basically how data is constructed once all the information is assembled. Data construction has different purposes in different scenarios and it is extremely crucial to understanding the conclusion of data. Concepts like collecting the data and organizing it plays into constructing data. Once the data is constructed it can help direct research towards its objective goals. Data construction can be formulated from either primary and secondary data sources and make the information comprehensible for research purposes.

**4. According to Chapter 22 of class 7 RD Sharma Maths, what is frequency of data? **

When collecting information at times you will find the value of the information being repeated multiple times. The amount of times this information is repeated is called the frequency of data. There is much research to help assimilate how frequent the data is repeated. There are many ways to help understand the frequency of data like the use of pie charts, diagrams and bar graphs. Basically, with this information, you can see how many times this data has occurred in the span of your research.

**5. According to Chapter 22 of Class 7 RD Sharma Maths, what is the purpose of Data handling? **

Data handling is collecting the raw data and presenting it in a way that can be easily understood. During and after the completion of a research project, data handling is the process of ensuring that research data is retained, preserved, or disposed of in a safe and secure manner. In Mathematics specifically, data handling is statistics and addresses aspects of data like security, preservation and confidentiality of said data. Data is used in all fields but in Mathematics, it deals with a numeric value.