Example 10 - Chapter 3 Class 7 Data Handling

Transcript

Example 10 A mathematics teacher wants to see, whether the new technique of teaching she applied after quarterly test was effective or not. She takes the scores of the 5 weakest children in the quarterly test (out of 25) and in the half yearly test (out of 25): Since marks are from 9 to 20 So, we make bar graph from 0 to 25 with a gap of 5