RBSE Class 7 Maths Notes Chapter 3 Data Handling

These comprehensive RBSE Class 7 Maths Notes Chapter 3 Data Handling will give a brief overview of all the concepts.

RBSE Class 7 Maths Chapter 3 Notes Data Handling

→ The collection, recording and presentation of data help us organise our experiences and draw inferences from them.

→ Average is a number that represents or shows the central tendency of a group of observations or data.

→ The most common representative value of a group of data is the arithmetic mean or the mean.
Arithmetic Mean (A.M) = \(\frac{\text { Sum of all observations }}{\text { Number of observations }}\)

→ The difference between the highest and the lowest observation is called range.

→ The mode of a set of observations is the observation that occurs most often.

→ Median is also a form of representative value. It refers to the value which lies in the. middle of the data with half of the observations above it and the other half below it.

→ A bar graph is a representative of numbers using bars of uniform widths.

→ Double bar graph help to compare two collections of data at a glance.

→ There are situations in our life, that are certain to happen, some that are impossible and some that may or may not happen. The situation that may or may not happen has a chance of happening.