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NCERT Solutions For Class 9 Maths Chapter 14 Statistics Ex 14.4

Here, Below you all know about NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.4 Question Answer. I know many of you confuse about finding these Chapter 14 Statistics Ex 14.4 Of Class 9 NCERT Solutions. So, Read the full post below and get your solutions.

TextbookNCERT
BoardCBSE
CategoryNCERT Solutions
ClassClass 9
SubjectMaths
ChapterChapter 14
ExerciseClass 9 Chapter 14 Statistics Ex Exercise 14.4
Number of Questions Solved6

NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.4

NCERT TEXTBOOK EXERCISES

Question 1. The following number of goals were scored by a team in a series of 10 matches

2, 3, 4, 5, 0, 1, 3, 3, 4, 3.
Find the mean, median and mode of these scores.

Solution:

(iii) Mode Arranging the given data in ascending order, we have 0, 1,2, 3, 3, 3, 3, 4, 4, 5.
Here, 3 occurs most frequently (4 times)
∴ Mode = 3

Question 2. In a mathematics test given to 15 students, the following marks (out of 100) are recorded

41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60
Find the mean, median and mode of this data.

Solution:

(i) Mean

(ii) Median Arranging the given data in descending order, we have 98, 96, 62, 60, 54, 52, 52, 52, 48, 46, 42, 41,40, 40, 39
Number of observations (n) = 15 which is odd.

(iii) Mode Arranging the data in descending order, we have 98, 96, 62, 60, 54, 52, 52, 52, 48, 46, 42, 41,40, 40, 39.
Here, 52 occurs most frequently (3 times).
∴ Mode = 52

Question 3. The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x.

29, 32, 48, 50, x, x + 2, 72, 78, 84, 95

Solution:

Number of observations (n) = 10which is even.

According to question, median = 63
∴ x + 1 = 63 ⇒ x = 63 – 1 = 62
Hence, the value of x is 62.

Question 4. Find the mode of 14, 25,14, 28,18,17,18,14, 23, 22,14 and 18.

Solution:

The given data is,
14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18
Arranging the data in ascending order, we have
14, 14, 14, 14, 17, 18, 18, 18, 22, 23, 25, 28
Here, 14 occurs most frequently (4 times).
∴ Mode = 14

Question 5. Find the mean salary of 60 workers of a factory from the following table

Solution:

Hence, the mean salary is ₹ 5083.33.

Question 6. Give one example of a situation in which

(i) the mean is an appropriate measure of central tendency.
(ii) the mean is not an appropriate measure of central tendency but the median is an appropriate measure of central tendency.

Solution:

(i) Mean marks in a test in mathematics,
(ii) Average beauty

NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.4 PDF

For NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.4, you may click on the link below and get your NCERT Solutions for Class 9 Maths Chapter 14 Statistics and Volumes Exercise pdf file.

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