## RS Aggarwal Class 9 Solutions Chapter 14 Statistics Ex 14A

These Solutions are part of RS Aggarwal Solutions Class 9. Here we have given RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14A.

**Other Exercises**

- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14A
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14B
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14C
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14D
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14E
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14F
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14G
- RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14H

**Question 1.**

**Solution:**

Statistics is a science which deals with the collection, presentation, analysis and interpretations of numerical data.

**Question 2.**

**Solution:**

(i) Numerical facts alone constitute data

(ii) Qualitative characteristics like intelligence, poverty etc. which cannot be measured, numerically, don’t form data.

(iii) Data are an aggregate of facts. A single observation does not form data.

(iv) Data collected for a definite purpose may not be suited for another purpose.

(v) Data is different experiments are comparable.

**Question 3.**

**Solution:**

(i) Primary data : The data collected by the investigator himself with a definite plan in mind are called primary data.

(ii) Secondary data : The data collected by some one other than the investigator are called secondary data. The primary data is more reliable and relevant.

**Question 4.**

**Solution:**

(i) Variate : Any character which is capable of taking several different values is called a variate or variable.

(ii) Class interval : Each group into which the raw data is condensed, is called a class interval

(iii) Class size : The difference between the true upper limit and the true lower limit of a class is called class size.

(iv) Class Mark : \(\frac { upper\quad limit+lower\quad limit }{ 2 } \) is called a class mark

(v) Class limits : Each class is bounded by two figures which are called class limits which are lower class limit and upper class limit.

(vi) True class limits : In exclusive form, the upper and lower limits of a class are respectively are the true upper limit and true lower limit but in inclusive form, the true lower limit of a class is obtained by subtracting O.S from lower limit of the class and for true limit, adding 0.5 to the upper limit.

(vii) Frequency of a class : The number of times an observation occurs in a class is called its frequency.

(viii) Cumulative frequency of a class : The cumulative frequency corresponding to a class is the sum of all frequencies upto and including that class.

**Question 5.**

**Solution:**

The given data can be represent in form of frequency table as given below:

**Question 6.**

**Solution:**

The frequency distribution table of the given data is given below :

**Question 7.**

**Solution:**

The frequency distribution table of the

**Question 8.**

**Solution:**

The frequency table is given below :

**Question 9.**

**Solution:**

The frequency table of given data is given below :

**Question 10.**

**Solution:**

The frequency distribution table of the given data in given below :

**Question 11.**

**Solution:**

The frequency table of the given data:

**Question 12.**

**Solution:**

The cumulative frequency of the given table is given below:

**Question 13.**

**Solution:**

The given table can be represented in a group frequency table in given below :

**Question 14.**

**Solution:**

Frequency table of the given cumulative frequency is given below :

**Question 15.**

**Solution:**

A frequency table of the given cumulative frequency table is given below :

Hope given RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14A are helpful to complete your math homework.

If you have any doubts, please comment below. Learn Insta try to provide online math tutoring for you.