Grade 7 Maths: Collecting, organizing and summarizing data in animated PowerPoint.

This section covers the following topics:

• Collecting data:  Sources – newspapers, people, internet, TV magazines etc.
• Data facts, populations, samples & questionnaires
• Raw data, frequency table, tallies, interval & range
• Stem-and-leaf method
• Grouping with an interval
• Working with intervals
• Keywords:  mode, median, bimodal, mean, range, central tendency
• Summarizing data, measures of dispersion

Sample questions with answers

These slides should be used with a laptop and data projector for your daily classroom teaching

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