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CHAPTER AT A GLANCE
Connecting the Dots
•Unit: Data Handling and Statistics
•Board weightage: Arithmetic mean, median, range, dot plots, outliers and the choice of the suitable representative value give regular 1-mark, 2-mark, 3-mark and 4-mark questions (please check the latest sample paper)
•Key ideas from the textbook: statistical questions, mean as fair share, median as the middle value, effect of an outlier, mean and median compared, variability (minimum, maximum and range), dot plots, handling missing values
•Most scoring part: writing the data in order before finding the median, and writing the formula for the mean with the total and the number of values
•Time to revise: about 60 minutes
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