Class 8 Maths – Chapter 5
Data Handling
NCERT Questions & Answers

Q1. Find the mean of the first 10 natural numbers.

Answer:

First 10 natural numbers are:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Sum = 1+2+3+4+5+6+7+8+9+10 = 55
Number of observations = 10

Mean = 55 ÷ 10 = 5.5

Q2. What is meant by the median of a data?

Answer:
Median is the middle value of the data when the observations are arranged in ascending or descending order.

Q3. Find the median of: 7, 5, 9, 3, 1

Answer:

Arrange the data in ascending order:
1, 3, 5, 7, 9

The middle value is 5
∴ Median = 5

Q4. What is mode?

Answer:
Mode is the value that occurs most frequently in a given data.

Q5. Find the mode of: 2, 4, 6, 4, 8, 4

Answer:

The number 4 occurs maximum number of times.
∴ Mode = 4