# Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7

(i) Which number is the highest? (ii) Which number is the lowest?

(iii) What is the range of the data? (iv) Find the arithmetic mean

**Solution:**

As per the question, we use the basic definition of parameters of statistics like mean and range to solve the problem.

Range = Highest marks – Lowest marks

(i)The highest number is 9.

(ii)The lowest number is 1.

(iii) The range of the data = Highest number – Lowest number no.

= 9 - 1 = 8

(iv) Arithmetic mean

= 4 + 6 + 7 + 5 + 3 + 5 + 4 + 5 + 2 + 6 + 2 + 5 + 1 + 9 + 6 + 5 + 8 + 4 + 6 + 7

= 100/20

= 5

**Video Solution:**

## Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 (i) Which number is the highest? (ii) Which number is the lowest? (iii) What is the range of the data? (iv) Find the arithmetic mean

### NCERT Solutions Class 7 Maths - Chapter 3 Exercise 3.1 Question 2

Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 (i) Which number is the highest? (ii) Which number is the lowest? (iii) What is the range of the data? (iv) Find the arithmetic mean

(i)The highest number is 9, (ii)The lowest number is 1.(iii) The range of the data is 8, (iv) Arithmetic mean of the data is given as 5