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  3. Statistics and Probability
  4. Statistics
  5. Mean, Median, and Mode
  6. Mean
  7. Arithmetic Mean of Numerical Data

Grade 9 Sri Lanka School Math Arithmetic Mean of Numerical Data

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Grade 9
1. Number System
2. Polynomials
3. Geometry
4. Coordinate Geometry
5. Linear Equations in Two Variables
6. Mensuration
7. Statistics and Probability
7.1. Statistics
7.1.1. Frequency Distribution of an Ungrouped Data
7.1.2. Cumulative Frequency Table of an Ungrouped Data
7.1.3. Bar Graph
7.1.4. Histogram
7.1.5. Frequency Polygons
7.1.6. Histograms and Frequency Polygons on a Single Graph
7.1.7. Mean, Median, and Mode
7.1.7.1. Mean
7.1.7.1.1. Arithmetic Mean of Numerical Data
7.1.7.1.2. Word Problems on Mean
7.1.7.1.3. Mean for Ungrouped Frequency Distributions
7.1.7.2. Median
7.1.7.3. Mode
7.2. Probability
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