NCERT Class 7 Mathematics Solutions: Chapter 3 – Data Handling Exercise 3.1 Part 4 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Example of How to Find the Range

1. The height of 10 girls were measured in cm and the results are as follows:

(i) What is the height of the tallest girl?

(ii) What is the height of the shortest girl?

(iii) What is the range of data?

(iv) What is the mean height of the girls?

(v) How many girls have heights more than the mean height?

Answer:

(i) The height of the tallest girl

(ii) The height of the shortest girl

(iii) The range of the data Highest height Lowest height

(iv) Mean height

(v) Five girls, i.e.. , have heights (in cm) more than the mean height.