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CHAPTER AT A GLANCE
Data Handling and Presentation
•Unit: Data Handling
•Board weightage: Collecting and organising data, tally marks and frequency tables, pictographs with a scale, bar graphs with a scale and reading data give regular 1-mark, 2-mark, 3-mark and 4-mark questions in school examinations (please check your school's latest sample paper)
•Key ideas from the textbook: data, tally marks, frequency, ascending order, pictograph and key, bar graph and scale, choosing a suitable scale, reading and interpreting graphs
•Most scoring part: writing the key or scale clearly and computing the number each bar or symbol stands for
•Time to revise: about 50 minutes
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