NCERT Solutions of Chapter: Data Handling. NCERT Solutions along with worksheets and notes for Class 7.
(1) Find the range of heights of any ten students of your class.
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.
(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