# NCERT Class 7 Mathematics Solutions: Chapter 3 – Data Handling Exercise 3.1 Part 1 (For CBSE, ICSE, IAS, NET, NRA 2022)

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

Answer:

Sr. No. | Name of students | Height (in feet) |

1 | Gunjan | |

2 | Aditi | |

3 | Nikhil | |

4 | Akhil | |

5 | Riya | |

6 | Akshat | |

7 | Abhishek | |

8 | Mayank | |

9 | Rahul | |

10 | Ayush |

Table title: Given 10 students of class

Table description: Give the range of heights of any ten students of class

Range: Highest height lowest height

2. Organize the following marks in a class assessment, in a tabular form:

.

(i) Which number is the highest?

(ii) Which number of the lowest?

(iii) What is the range of the lowest?

(iv) Find the arithmetic mean?

Answer:

Table title: Table shows the marks in a class assessment

Table description: Table shows the marks in a class assessment

(i) Height number

(ii) Lowest number

(iii) Range

(iv)

Sum of all the observations

Total number of observations

Arithmetic mean