Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Additional Questions

Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Additional Questions

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Additional Questions

Additional Questions and Answers

Exercise 5.1

Question 1.
The class scores on an exam are 97, 85, 92, 78 and 90. What is the average score?
Solution:

Question 3.
Mean of same observations is 15. Their sum is 405. Find the number of values.
Solution:

Number of values = 405/15 = 27

Exercise 5.2

Question 1.
Find the mode of the following data. 1,2,5, 7, 3, 4, 2, 5, 7, 6, 2, 3.
Solution:
Arranging the data in ascending order: 1, 2, 2, 2, 3, 3,4, 5, 5, 6, 7, 7
Here 2 occurs maximum number of times.
∴ Mode is 2.