NCERT Solutions for Class 9 Maths Chapter 14

NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.1, Exercise 14.2, Exercise 14.3 and Exercise 14.4 in English Medium and Hindi Medium free to download in PDF updated for new academic session 2020-21. As we know that the NCERT Textbooks are now implemented in UP Board Schools. So, the students of Uttar Pradesh Board can use these solutions as UP Board Solutions for class 9 Maths Chapter 14 Prashnavali 14.1, Prashnavali 14.2, Prashnavali 14.3 and Prashnavali 14.4 in Hindi Medium. Class 9 Maths Chapter 14 Solutions are to study online in text format and Video format or download in PDF format for academic year 2020-21.

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NCERT Solutions for Class 9 Maths Chapter 14

Class: 9Maths (English and Hindi Medium)
Chapter 14:Statistics

9th Maths Chapter 14 Solutions in English & Hindi Medium

Get here the NCERT Solutions for Class 9 Maths Chapter 14 Statistics all exercises which are given below updated for new academic session 2020-21. UP Board Class 9 Students are using NCERT Textbooks now. So, they can also download UP Board Solutions for Class 9 Maths Chapter 14 all Exercises. Download NCERT Solutions and UP Board Solutions Offline Apps based on latest CBSE Syllabus 2020-2021 for all boards who are using NCERT Books 2020-21.




Class 9 Maths Exercise 14.1 and 14.2 Solutions in Video

Class 9 Maths Exercise 14.1 Solutions in Video
Class 9 Maths Exercise 14.2 Solutions in Video

Class 9 Maths Exercise 14.3 and 14.4 Solutions in Video

Class 9 Maths Exercise 14.3 Solutions in Video
Class 9 Maths Exercise 14.4 Solutions in Video




What do you understand by data? What are the main data types?

Data: The facts or figures (observation / information collected) which are numerical or otherwise, collected with a definite purpose, are called data.
Data can be further divided into two categories as follows:
Primary data: The data collected by the investigator himself for a definite plan or purpose, is known as primary data.
Secondary data: The data which are not collected directly but obtained from some other sources (published or unpublished), is known as secondary data.

What is meant by Frequency Distribution of data?

Frequency Distribution: The number of entries of the data having their values lying in a class is defined as the frequency of the class. The table in which the corresponding frequency are written against each class, is called the frequency distribution of the given data.

What is meant by Class Interval? What is Class size?

Class Interval: Class intervals are the groups in which all the observations are divided. Each class is bounded by two figures or numbers which are called class limits. The difference between the upper limit and the lower of a class is called class size.

What is a Frequency Polygon?

Frequency Polygon: A frequency polygon is the polygon obtained by joining the mid-points of upper horizontal sides of all the rectangle in the histogram. It can also be drawn independently without drawing histogram. For this we find class mark of each class interval.

Important Notes on 9th Maths Chapter 14

Mean: The mean of a number of observations is the sum of the values of all the observations divided by the total number of observations.
Median: Median is that value of the given observation, which divides it into exactly two parts.
Mode: Mode is that value of the given data, which occurs most frequently.



Important Questions on 9th Maths Chapter 14

Give five examples of data that you can collect from your day-to-day life.
Five examples of data that we can collect from our day-to-day life:
1. Height of our classmates or weight of our classmate.
2. Height of first 100 plants near by our locality.
3. Maximum or minimum temperature of a particular month.
4. Time spend for watching TV in a particular week.
5. Rainfall in our city in last 10 years.
आकंड़ो 14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18 का बहुलक ज्ञात कीजिए।
प्रेक्षणों को आरोही क्रम में व्यवस्थित करने पर:

14, 14, 14, 14, 17, 18, 18, 18, 22, 23, 25, 28

बहुलक सबसे अधिक बार आने वाला प्रेक्षण का मान होता है।
क्योंकि प्रेक्षण 14 सबसे अधिक (4 बार) आया है।
अतः, दिए गए प्रेक्षणों का बहुलक 14 है।

निम्न स्थिति पर आधारित एक उदाहरण दीजिए: माध्य ही केन्द्रीय प्रवृत्ति का उपयुक्त माप है।
आंकड़ों के चरम मानों से माध्य प्रभावित होता है। यदि आंकड़ों के कुछ अंकों में अंतर बहुत अधिक हो, तो इस स्थिति में माध्य इन आंकड़ों का उत्तम प्रतिनिधित्व नहीं करता। क्योंकि आंकड़ों में उपस्थित चरम मानों से माध्यक और बहुलक प्रभावित नहीं होते हैं, इसलिए इस स्थिति में इनसे दिए हुए आंकड़ों का एक उत्तम प्रतिनिधित्व होता है।
माना निम्नलिखित आंकड़े किसी परिवार के सदस्यों की ऊँचाइएयां है।
154.9 cm, 162.8 cm, 170.6 cm, 158.8 cm, 163.3 cm, 166.8 cm, 160.2 cm
यहाँ आंकड़ों के अंकों में अंतर बहुत कम है, तो इस स्थिति में माध्य इन आंकड़ों का उत्तम प्रतिनिधित्व करता है।
What do understand by primary or secondary data?
When the information was collected by the investigator herself or himself with a definite objective in her or his mind, the data obtained is called primary data.

When the information was gathered from a source which already had the information stored, the data obtained is called secondary data.

What is statistics?
Statistics is the area of study dealing with the presentation, analysis and interpretation of data.

NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.1
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.1 in Hindi
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.2
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.2 in pdf form
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.2 in english medium
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.2 for up, gujrat, mp cbse board
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.2 all answers guide free
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.2 in Hindi
9 Maths Exercise 14.2 sols
14.2 class 9 maths
9 Maths ex. 14.2
class 9 Exercise 14.2
9 Maths Exercise 14.3
9 Maths Exercise 14.3 sols in hindi medium
9 Maths Exercise 14.3 all question answers guide
sols of 9 Maths Exercise 14.3
pdf solutions of 9 Maths Exercise 14.3
download 9 Maths Exercise 14.3 in pdf
free 9 Maths Exercise 14.3 sols
Class 9 Maths Chapter 14 Exercise 14.4
Class 9 Maths Chapter 14 Exercise 14.4 in pdf form
Class 9 Maths Chapter 14 Exercise 14.4 question 1, 2, 3, 4, 5, 6, 7, 8
9 Maths Exercise 14.4 sols
solutions of 9 Maths Exercise 14.3 in pdf
all answers of 9 Maths Exercise 14.3