## NCERT Solutions for Class 11 Statistics Chapter 9 - Use of Statistical Tools

## FAQs on NCERT Solutions for Class 11 Statistics Chapter 9

1. What is statistics? Explain its importance?

Statistics is a branch of mathematics that has several quantified tools, methods, representations to find values by taking huge data and it helps to forecast the outcomes. We have various kinds of tools like:

Mean

Regression analysis

Skewness

Kurtosis

Variance

Analysis of variance

All these are utilized at various steps to perform tasks in different industries.

2. If you are supposed to start a dairy business, consider it as a project, and explain the steps involved in it?

First, we need to forecast the amount of milk that we need to sell per month or an annum. For that purpose, we need to consider the available resources like capital, number of cows or buffaloes through which we can get the milk, and how far they are able to give the milk that can be measured in liters. Then we need to search for the customers like surveying the people regarding their utilization based on the family size of each house. Then represent all the data in a tabular form and estimate the results by calculating the average or mean for the data. Now we can observe the findings like if the requirement is 80 liters, we need to produce 100 liters of milk and the expenses may be 1 lakh rupees, and the earnings may come 120,000 rupees wherein the profit is 20,000 per month if everything goes well.

3. What are the concepts covered in Chapter 9 of Class 11 Statistics?

Chapter 9 deals with the 'Use of Statistical Tools' which is one of the easiest chapters where data is interpreted and analyzed to get something meaningful. So, the chapter deals with the following concepts as listed out in the NCERT Solutions for Chapter 9:

An introduction

Identifying problems or areas that need studying

Target group choice

Data Collection

Organizing and presenting data

Analyzing and interpreting

Conclusion

Project

These major concepts help students relate to the ideas followed in the chapter.

4. What are the tools used to study statistical data in Chapter 9 of Class 11 Statistics?

'Use of Statistical Data' is the name of chapter 9 Of Class 11 Statistics. All the concepts in this chapter are crisply explained by experts in NCERT Solutions. Statistical tools are the various tools that are used for presenting data. Class 11 students learn to represent data using the following statistical tools:

In stage 1: Samples

In stage 2: Arrays

In stage 3: Tables, Graphs and Diagrams

In stage 4: Percentages and Averages

In stage 5: Magnitudes of percentages

5. What are the advantages of using NCERT Solutions for Chapter 9 of Class 11 Statistics?

Using NCERT Solutions for Chapter 9 provided by Vedantu has numerous advantages. First of all, being created by proficient experts, this material provides students with all-inclusive details on the chapter in simple language. As solutions are revised according to the curriculum, students only have to learn relevant topics for the exams. Moreover, it functions as a comprehensive study material providing illustrations as examples for students to easily follow the concepts.

6. Which questions are important in Chapter 9 of Class 11 Statistics?

Though Chapter 9 of Class 11 Statistics is comparatively an easy chapter, there are some areas acting as reserves from where important questions are asked for the exam. The list below highlights the topics from where questions are asked from chapter 9:

Statistical Methods

Preparing Projects

Demographics and its structure

Variables in demographic structure

The NCERT Solutions created by professionals exclusively for this chapter breaks down these concepts forming a reliable and comprehensible study material for students' use.

7. Which are the five variables included in the demographic structure in Chapter 9 of Class 11 Statistics?

Demographic structure in Chapter 9 mainly deals with the age distribution of a population, that is, it focuses on the number of people in an area. There are five prominent variables in the demographic structure of a population, otherwise known as demographic processes. They are listed out below:

Population size

Density

Age structure

Birth rate

Death rate

These variables affect the population demographics of a particular geographical area and statistical tools help identify and solve problems related to these variables.