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Knowledge
Statistics, a branch of mathematics, focuses on collecting, analyzing, interpreting, and presenting numerical data to facilitate informed decision-making. Key statistical terms include data classifications, types of data, and data organization methods. The chapter also covers measures of central tendency, graphical data representation, and the practical applications of statistics across various fields.
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References
m9-5.pdfClass Notes
Memorization
What we have learnt
- Statistics involves the col...
- Understanding types of data...
- Measures of central tendenc...
Revision Tests
What we have learnt
- Statistics involves the collection and analysis of data.
- Understanding types of data, such as primary and secondary, is crucial for effective analysis.
- Measures of central tendency include mean, median, and mode, which help summarize data.
Key Concepts
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Term: Data
Definition: A collection of facts, figures, or information.
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Term: Mean
Definition: The arithmetic average, calculated as the sum of all observations divided by the number of observations.
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Term: Median
Definition: The middle value in a data set when arranged in order; it is the average of the two middle values if the number of observations is even.
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Term: Mode
Definition: The value that appears most frequently in a data set.
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Term: Histogram
Definition: A type of bar graph used to represent grouped data with continuous class intervals.