RD Sharma Class 11 Solutions Chapter 32 Statistics Exercise 32.7 (Updated for 2021-22)

RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7

RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7: In this section, we’ll look at how to compare two or more series using various metrics of dispersion. Our expert faculty team’s solutions assist students in achieving full marks in Maths by assisting them in their board preparation. This page’s solutions section offers extensive step-by-step explanations for all of the problems in this chapter. Solving RD Sharma Class 11 Maths Solutions is a necessary if you want to get a good grade. Here are the RD Sharma Solutions for Class 11 Chapter 32, which include detailed solutions of exercise 32.7. This exercise pdf can be downloaded using the links provided to students.

Download RD Sharma Class 11 Solutions Chapter 32 Statistics Exercise 32.7 Free PDF

RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7

 


Access answers to RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7- Important Question with Answers

1. Two plants A and B of a factory show the following results about the number of workers and the wages paid to them

Plant A

Plant B

No. of workers

5000

6000

Average monthly wages

₹2500

₹2500

The variance of the distribution of wages

81

100

In which plant A or B is there greater variability in individual wages?

Solution:

Variation of the distribution of wages in plant A (σ2 =18)

So, the Standard deviation of the distribution A (σ – 9)


Similarly, the Variation of the distribution of wages in plant B (σ=100)

So, the Standard deviation of the distribution B (σ – 10)

And, Average monthly wages in both the plants is 2500,

Since the plant with a greater value of SD will have more variability in salary.

∴ Plant B has more variability in individual wages than plant A

2. The means and standard deviations of heights and weights of 50 students in a class are as follows:

Weights

Heights

Mean

63.2 kg

63.2 inch

Standard deviation

5.6 kg

11.5 inch

Which shows more variability, heights, or weights?

Solution:

RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-2

3. The coefficient of variation of the two distributions are 60% and 70%, and their standard deviations are 21 and 16 respectively. What is their arithmetic means?

Solution:

RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-3

4. Calculate the coefficient of variation from the following data:

Income (in ₹):

1000-1700

1700-2400

2400-3100

3100-3800

3800-4500

4500-5200

No. of families:

12

18

20

25

35

10

Solution:

RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-4

5. An analysis of the weekly wages paid to workers in two firms A and B, belonging to the same industry gives the following results:

Firm A

Firm B

No. of wage earners

587

648

Average weekly wages

₹52.5

₹47.5

The variance of the distribution of wages

100

121


(i) Which firm A or B pays out the larger amount as weekly wages?
(ii) Which firm A or B has greater variability in individual wages?

Solution:

RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-5

Statistics Ex 32.7 Q6
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-6
Statistics Ex 32.7 Q7
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-7
Statistics Ex 32.7 Q8
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-8
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-8 i
Statistics Ex 32.7 Q9
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-9
Statistics Ex 32.7 Q10
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-10
RD-Sharma-class-11 Solutions-Chapter-32-Statistics-Ex-32.7-Q-10 i

We have provided complete details of RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7. If you have any queries related to CBSE Class 11, feel free to ask us in the comment section below.

FAQs on RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7

How many questions are there in RD Sharma Class 11 Solutions Chapter 32 Statistics Exercise 32.7?

There are a total of 10 questions in RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7.

Is RD Sharma Solutions for Class 11 Maths Chapter 32 Exercise 32.7 for free?

Yes, You can get RD Sharma Solutions for Class 11 Maths Chapter 32 Exercise 32.7 for free.

Where can I download RD Sharma Class 11 Solutions Chapter 32 Exercise 32.7 free PDF?

You can download RD Sharma Solutions Class 11 Maths Chapter 32 Exercise 32.7 free PDF from the above article.

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