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Solutions for Chapter 5: Statistics
Below listed, you can find solutions for Chapter 5 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Mathematics - Term 3 [English] Class 7 TN Board.
Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board 5 Statistics Exercise 5.1 [Pages 99 - 100]
Fill in the blanks
The mean of first ten natural numbers is ____________
If the average selling price of 15 books is ₹ 235, then the total selling price is __________
The average of the marks 2, 9, 5, 4, 4, 8, 10 is ____________
The average of integers between −10 to 10 is __________
Ages of 15 students in 8th standard is 13, 12, 13, 14, 12, 13, 13, 14, 12, 13, 13, 14, 13, 12, 14. Find the mean age of the students
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find the mean mark
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find the maximum mark obtained
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find the minimum mark obtained
The mean height of 11 students in a group is 150 cm. The heights of the students are 154 cm, 145 cm, Y cm, Y + 4 cm, 160 cm, 151 cm, 149 cm, 149 cm, 150 cm, 144 cm and 140 cm. Find the value of Y and the heights of two students?
The mean of runs scored by a cricket team in the last 10 innings is 276. If the scores are 235, 400, 351, x, 100, 315, 410, 165, 260, 284, then find the runs scored in the fourth innings
Find the mean of the following data.
5.1, 4.8, 4.3, 4.5, 5.1, 4.7, 4.5, 5.2, 5.4, 5.8, 4.3, 5.6, 5.2, 5.5
Arithmetic mean of 10 observations was found to be 22. If one more observation 44 was to be added to the data, what would be the new mean?
Objective type questions
_______________ is a representative value of the entire data
Mean
range
minimum value
maximum value
The mean of first fifteen even numbers is ____________
4
16
5
10
The average of two numbers are 20. One number is 24, another number is ____________
16
26
20
40
The mean of the data 12, x, 28 is 18. Find the value of x
18
16
14
22
Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board 5 Statistics Exercise 5.2 [Page 104]
Find the mode of the following data.
2, 4, 5, 2, 6, 7, 2, 7, 5, 4, 8, 6, 10, 3, 2, 4, 2
The number of points scored by a Kabaddi team in 20 matches are 36, 35, 27, 28, 29, 31, 32, 31, 35, 38, 38, 31, 28, 31, 34, 33, 34, 31, 30, 29. Find the mode of the goals scored by the team
The ages (in years) of 11 cricket players are given below. 25, 36, 39, 38, 40, 36, 25, 25, 38, 26, 36. Find the mode of their ages.
Find the mode of the following data.
12, 14, 12, 16, 15, 13, 14, 18, 19, 12, 14, 15, 16, 15, 16, 16, 15, 17, 13, 16, 16, 15, 15, 13, 15, 17, 15, 14, 15, 13, 15, 14.
Objective Type Questions
The colors used by the six students for drawing is blue, orange, yellow, white, green and blue then the mode is ________
blue
green
white
yellow
Find the mode of data 3, 6, 9, 12, 15
1
2
3
No mode
Find the modes of the data 2, 1, 1, 3, 4, 5, 2
1 and 5
2 and 3
2 and 1
1 and 4
Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board 5 Statistics Exercise 5.3 [Page 109]
Fill in the blanks
The median of the data 12, 14, 23, 25, 34, 11, 42, 45, 32, 22, 44 is ___________
The median of first ten even natural numbers is ___________
Find the median of the given data: 35, 25, 34, 36, 45, 18, 28
The weekly sale of motor bikes in a showroom for the past 14 weeks given below. 10, 6, 8, 3, 5, 6, 4, 7, 12, 13, 16, 10, 4, 7. Find the median of the data.
Find the median of the 10 observations 36, 33, 45, 28, 39, 45, 54, 23, 56, 25. If another observation 35 is added to the above data, what would be the new median?
Objective type questions
If the median of a, 2a, 4a, 6a, 9a is 8, then find the value of a is
8
6
2
10
The median of the data 24, 29, 34, 38, 35 and 30, is ___________
29
30
34
32
The median first 6 odd natural numbers is ____________
6
7
8
14
Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board 5 Statistics Exercise 5.4 [Pages 109 - 110]
Miscellaneous Practice problems
Arithmetic mean of 15 observations was calculated as 85. In doing so an observation was wrongly taken as 73 for 28. What would be correct mean?
Find the median of 25, 16, 15, 10, 8, 30
Find the mode of 2, 5, 5, 1, 3, 2, 2, 1, 3, 5, 3
The marks scored by the students in social test out of 20 marks are as follows: 12, 10, 8, 18, 14, 16. Find the mean and median?
The number of goals scored by a football team is given below. Find the mode and median for the data of 2, 3, 2, 4, 6, 1, 3, 2, 4, 1, 6
Find the mean and mode of 6, 11, 13, 12, 4, 2
Challenge Problems
The average marks of six students is 8. One more student mark is added and the mean is still 8. Find the student mark that has been added
Calculate the mean, mode and median for the following data:
22, 15, 10, 10, 24, 21
Find the median of the given data:
14, −3, 0, −2, −8, 13, −1, 7
Find the mean of first 10 prime numbers and first 10 composite numbers
Solutions for 5: Statistics
![Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board chapter 5 - Statistics Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board chapter 5 - Statistics - Shaalaa.com](/images/mathematics-term-3-english-class-7-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg)
Samacheer Kalvi solutions for Mathematics - Term 3 [English] Class 7 TN Board chapter 5 - Statistics
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Concepts covered in Mathematics - Term 3 [English] Class 7 TN Board chapter 5 Statistics are Concept of Data Handling, Collection of Data, Organisation of Data, Concept of Representative Values - Average, Arithmetic Mean - Raw Data, Concept of Mode, Concept of Median.
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