NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.4 are part of NCERT Solutions for Class 9 Maths. Here we have given NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.4.
 Statistics Class 9 Ex 14.1
 Statistics Class 9 Ex 14.2
 Statistics Class 9 Ex 14.3
 Statistics Class 9 Ex 14.4
Board  CBSE 
Textbook  NCERT 
Class  Class 9 
Subject  Maths 
Chapter  Chapter 14 
Chapter Name  Statistics 
Exercise  Ex 14.4 
Number of Questions Solved  6 
Category  NCERT Solutions 
NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.4
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.
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.
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.
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:
Salary (in Rs.)  Number of workers 
3000  16 
4000  12 
5000  10 
6000  8 
7000  6 
8000  4 
9000  3 
1000  1 
Total  60 
Solution.
Salary (In Rs.)  Number of workers  f_{i}x_{i}_{ } 
3000  16  48000 
4000  12  48000 
5000  10  50000 
6000  8  48000 
7000  6  42000 
8000  4  32000 
9000  3  27000 
1000  1  10000 
Total 

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
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