Data Handling| NCERT Solutions| Class 7

NCERT Solutions of Chapter: Data Handling. NCERT Solutions along with worksheets and notes for Class 7.

 

Exercise 3.1

(1) Find the range of heights of any ten students of your class.

Ans-

Height of ten students-

150 cm,149 cm, 152 cm, 138 cm, 155 cm, 140 cm, 151 cm, 156 cm, 148 cm, 147 cm

Arranging data in ascending order

138,140, 147, 148, 149,150,151,152,155,156

Maximum height=156 cm

Minimum height=138 cm

Range= 156-138=18 cm

 

(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 height?

(ii) Which number is the lowest?

(iii) What is the range of the data?

(iv) Find the arithmetic mean

 

 

 

Ans-

 

Diagram of Question 1 of Exercise 3.3 of NCERT Chapter Data Handling

 

 

Diagram of Question 1 of Exercise 3.3 of NCERT Chapter Data Handling

 

 

Diagram of Question 3 of Exercise 3.3 of NCERT Chapter Data Handling

 

 

 

Diagram of Q 5, Exercise 3.3 of NCERT Chapter Data Handling

Ans-

Diagram of Question 6 of Exercise 3.3 of NCERT Chapter Data Handling

Helping Topics

Data Handling

Worksheet Class 7

 

 

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