from a handpicked tutor in LIVE 1-to-1 classes

# 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.

The given data is as follows,

4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7

Let's tabulate the data as shown below.

(i)The highest number is 9.

(ii)The lowest number is 1.

(iii) We know that, Range = Highest marks – Lowest marks

The range of the data = Highest number – Lowest number

= 9 - 1

= 8

(iv) Arithmetic mean = Sum of all the marks / Total number of observations

= (4 + 6 + 7 + 5 + 3 + 5 + 4 + 5 + 2 + 6 + 2 + 5 + 1 + 9 + 6 + 5 + 8 + 4 + 6 + 7) / 20

= 100 / 20

= 5

**☛ Check: **NCERT Solutions for Class 7 Maths Chapter 3

**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

**Summary:**

The following marks in a class assessment, 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 has been arranged in a tabular format. (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.

**☛ Related Questions:**

- Find The Mean Of The First 5 Whole Numbers
- A Cricketer Scores The Following Runs In Eight Innings 58 76 40 35 46 45 0 100 Find The Mean Score
- Following Table Shows The Points Of Each Player Scored In Four Games Now Answer The Following Questions I Find The Mean To Determine As Average Number Of Points Scored Per Game
- The Marks Out Of 100 Obtained By A Group Of Students In A Science Test Are 85 76 90 85 39 48 56 95 81 And 75 Find The I Highest And The Lowest Marks Obtained By The Students

visual curriculum